Pay attention to the suitability of choosing ppe Pay attention to the suitability of choosing ppe .

Pay attention to the suitability of choosing ppe

You Xianmei home service international quality leading the home service fashion trend

Youxianmei home service company in South China Sea have their own design and R & D center , while hiring Italian designer Amethyst as Yusemite home service brand design consultants. In ensuring the international fashion design into the fashion design home service at the same time, their own design team to avoid the general home service brand does not have their own designers, models similar problems. Youxianmei home service is the only one with a professional marketing consultant full service company, in 2008 the company has launched one hundred celebrity image project, and the Home Services Association donated to build clothes Association Hope Primary School, You Xianmei Home service win in China and Zhou Zong also CCTV and local radio repeatedly publicized coverage.

悠仙美地

Mr. Zhou, the general manager of Yuxianmei Garments Co., Ltd., took part in the first CCTV win in China and won the runner-up heroeship. While receiving the Japanese Softbank and IDG venture capital investment, he also won the VC's recognition of the company's brand and projects. You Xianmei home service If the company in the three years after the venture capital funds at an annual rate of increase of 50% or more, venture capital will chase 50 million funds. You Xianmei home service as the industry's only venture capital background of the business, not only to obtain funding support, more importantly, the background of the venture capital brand promotion and promotion role, You Xianmei home service will also be internationally advanced Management philosophy and model into the development of the company, the brand's development more standardized and more potential for development.

悠仙美地家居服   国际品质引领家居服时尚风潮

You Xianmei home service company brand new and terminal image, and in the industry leading magazine "Ruili" annual advertising campaign, rapid promotion of brand awareness and influence. Homewear industry has a characteristic, Youxianmei home service is not yet the absolute market leading brand, there is no entry of international brands. At this time a brand first market promotion and promotion is easy to gain market awareness. You Xianmei home service Hong Kong experience International Fashion Co., Ltd. is a Hong Kong-owned nature of the enterprise, 97 years into the mainland market. Weifang in Shandong and the South China Sea in Guangdong have two production bases, You Xian Mei Di home service company 60 acres of industrial park in Weifang High-tech Development Zone.

悠仙美地家居服   国际品质引领家居服时尚风潮

Youxianmei home service products Spring and summer flagship price of 100 yuan -300 yuan between autumn and winter flagship price of 200-450 yuan, with the market operation of the brand of home service price system is basically the same. Youxianmei home service and the general price alone sales of home service compared to similar products will make these brands more and more uncompetitive, You Xianmei home service more with long-term space for development, the brand of the agency must Is doing long-term bullish things. You Xianmei home service and the industry's only Italian designers and design concepts introduced, but also represents the international fashion.

FR Reflective Tape

Clear Reflective Tape,Reflective Tape,Reflective Stripes

Chinastars Reflective Material Co., Ltd. , http://www.reflective-fabric.com


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Current load test expert high current generator

Product introduction:

The high-current generator is a special equipment specially designed and manufactured according to the current load tests and temperature-rise tests conducted by the electric power department and industrial and mining enterprises in electrical equipment tests such as various switches, current transformers and other electrical equipment. It is a necessary equipment for power supply companies, large factories, metallurgy, power plants, railways and other power maintenance departments. Using advanced microelectronics processing technology, the entire process of use can be set up in advance, the entire Chinese language interface, the operation is simple and clear. All test items are set automatically after the test, without manual intervention Large current generator depending on product volume, weight using split / one-piece structure, with stepless adjustment of output current, current rise balance, load change range, work reliable, operation Simple, safe, and other characteristics, GH-6402 high current generator is an ideal equipment for industrial or mining companies to perform the up-flow or temperature rise test.

Features:

1.1 Operating voltage: 380V

1.2 Rated frequency: 50Hz

1.3 Output voltage range: 0 ~ 15V, continuous adjustment.

1.4 output current range: 0 ~ 180A, continuous adjustment.

1.5 input connection: cross-sectional area 2.5mm2 cable, length 3 meters.

1.6 Output connection: Terminal block, can be crimped bare wire, ring or fork-shaped terminal, the conductor cross-sectional area of ​​not less than 10mm2.

1.7 Input Switch: Circuit Breaker, 3P+N,

1.8 With protection, control, input power indication, output loop current display device (resolution 0.1A, basic error 1%), etc. 1.9 Working mode: continuous operation.

1.10 has the necessary heat dissipation configuration to ensure safe use.

2, load device:

2.1 current range: 0 ~ 180A;

2.2 Load properties: purely resistive;

2.3 Input and output connections: terminal blocks, can be pressed bare wire, connected to the ring or fork-shaped terminal, the conductor cross-sectional area of ​​not less than 10mm2.

2.4 working methods: continuous work.

2.5 has the necessary heat dissipation configuration to ensure the safety of use.

Product parameters:

model

model


specification

Rated capacity (KVA)

Amount input

Amount of output

impedance

Voltage%

Voltage%

Empty

Current %

Current %

structure

form

form

Regulator

Riser

Current (A)

Voltage (V)

Current (KA)

Voltage (V)

GH-5/1000

5

5

22.7

220

0.5/1

10/5

<8

<6

One body/split body

GH-10/2000

10

10

26.3

380

1/2

10/5

<8

<6

Split

GH-20/4000

20

20

52.6

380

2/4

10/5

<8

<6

Split

GH-25/5000

25

25

65.8

380

2.5/5

10/5

<8

<6

Split

GH-50/10000

50

50

125

400

5/10

10/5

<8

<6

Split

                    

 

Carbon Steel Tee

Carbon Steel Seamless Tee,Carbon Steel Tee,A234 Wpb Steel Tee

,Square Pipe Steel Tubes CO.,Ltd , http://www.ns-pipefitting.com


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Campus Wireless Coverage Scheme Wireless Coverage Project

Project Overview adopts a common network protocol standard: At present, wireless LANs generally adopt 802.11 series standards. Therefore, WLANs will mainly support 802.11g (54M bandwidth) standards to provide relative network communication services that can be used in practical applications, taking into account multiple types of applications. For future investment protection, it is necessary to support both 801.11a and 802.11b and implement dual-band three-mode technology.

Coverage requirements:

1. Outdoor sites where wired networks cannot be accessed: It is difficult to achieve wired network access in some places in the area, and wireless networks that cover a wide range of outdoor spaces can be accessed through wireless.

2. Inconvenient or constrained indoor space for wired networks: Some indoor spaces in the area have a large space, which can result in the need for many people to access the network at the same time. Using the wired method can only provide a small number of interfaces and cannot meet the requirements. With wireless network coverage to solve a considerable number of mobile devices access the network at the same time.

Wireless network network structure requirements:

The APs deployed for wireless access are connected to the LAN through the convergence layer devices of the LAN. The corresponding interfaces are provided to the wireless network cable at the aggregation layer. The devices at the access layer are described in the solution.

Design Scheme I. Whole Network Logic Topology


Second, the wireless user authentication solution This program mainly uses portal authentication. The wireless AP communicates with the wireless controller through the Layer 2 tunneling protocol. The wireless user authentication points are placed on the wireless service card insertion device and the background iMC authentication and accounting system. As a user authentication point.

Given the current scale of wireless networks, from the perspective of network support capabilities, a single card can be implemented. For wireless users, the wireless controller serves as the endpoint for 802.1x authentication, and the iMC authentication and accounting system serves as the final authentication point. When the user performs handover within the AP, the main task at this time is unified scheduling by the wireless switch, when the user When the coverage of different APs is under different ports, the user will not trigger authentication again.

Third, the whole network security solution wireless local area network public network, network security issues must be considered when building a network, security methods are mainly focused on several aspects: user security, network security, and in the local area network mainly dependent on the user entity The attributes mainly include the layer 2 attributes (such as the MAC address) of the information terminal used by the user and the user's account number and password. For the user, the account information is a real-name principle and is associated with the user's personal information. Considering the security mechanism of air interface information using wireless networks, the security of wireless network-related wired networks should also be considered. The security of existing wired networks is not considered in this technical proposal.

The wireless network security part mainly includes the following aspects:

1. MAC address filtering: MAC address-based filtering is currently supported to restrict terminals with certain types of MAC address characteristics from entering the network.

2. SSID management: It is a scheme of network identification. The network carries out a logical identification. The packets sent by the terminal are required to carry the SSID. If there is no SSID, it cannot enter the network.

3, WEP encryption: WEP encryption is a static encryption mechanism, both sides of the communication have a common key, the air interface information mesغير مجاز مي باشدes sent by the terminal must use a common key for encryption;

4. AES encryption is supported. The AES security mechanism is a dynamic key management mechanism. At the same time, the key generation is also implemented based on an asymmetric key mechanism. At the same time, the management of the key is also regularly updated. The system time can be set by the system. As a rule, the general situation is set to 5 minutes or so, so that illegal users want to obtain a sufficient number of packets to match out the key within 5 minutes. From the perspective of the wireless air interface, it is basically impossible. of;

5. Permission can be divided according to the user name, that is, the same user accesses the wireless network in different places and their permissions remain the same; the key setting may be combined with the user information according to the SSID information, that is, the key generation of different users under different SSIDs. Can be different, this way to a certain extent, to ensure that the issue of serial number between users, thus protecting investment, in order to achieve balance between operation and maintenance;

6. Traffic abnormality and abnormal mesغير مجاز مي باشدe supervision are implemented to protect the further security of the network.

Fourth, frequency planning and load balancing solution frequency planning (support dual-band three-mode, it is recommended to deploy 802.11g)

802.11g uses the open 2.4GHz ISM band, and the number of operable channels is 13 European standard channels. Because of its support for direct sequence spread spectrum technology, there is overlap between adjacent frequency points. For true non-overlapping channels, there are only 5 operating center frequency points apart. Therefore, for the 802.11g operating band at 2.4 GHz, only three-cell cellular planning can be theoretically implemented to achieve seamless coverage of hot spots that need to be planned. In addition, because the power template can be in compliance with the adjacent channel and the partition does not interfere, it also greatly affects the effect of frequency planning.

A large number of experiments have been conducted on how to implement 802.11g frequency planning. Experiments have shown that 3 carrier frequencies can also achieve seamless coverage of the areas covered by cellular networks, and provide higher service bandwidth, improve service quality, and develop high-bandwidth services. .
Figure 3 Frequency plan schematic

Functions that need to be used in conjunction with frequency planning include: 1. The AP supports 13 channel settings 2. The AP supports 100mW maximum RF power and multi-level power control 3. The AP supports external antennas and directional antennas 4. AP-supported bridging function is also required for special applications , access and WDS functions 5, wireless network management solutions based on the standard SNMP protocol to achieve device management, special wireless LAN management software Quidview wireless components can achieve all WLAN network management. Network management workstations can be placed anywhere on the Internet, and management of wireless switches can be achieved through standard SNMP. The wireless switch can implement more powerful management, including automatic topology discovery, automatic upgrade, batch configuration, hierarchical management, and hierarchical alarming of the AP, and can implement security functions such as radio frequency scanning and illegal access point monitoring in the wireless coverage space. The wireless LAN management software WXM can configure and manage the entire WLAN wireless network, which has the following features:

1. Zero-configuration installation: The access point does not need to be pre-configured, and the AP inherits the configuration information from the wireless controller. The wireless controller can be connected to the core switch in the center of the equipment room. The wireless AP does not need to be configured in advance. That is, it accesses the wired network through the access layer switch and automatically registers with the wireless controller to obtain the IP address assigned by the DHCP server and automatically Downloading the configuration file works normally, saving a lot of installation and maintenance غير مجاز مي باشدts in the large-scale AP project.

2. Anti-theft and anti-intrusion: Sensitive configuration information is not saved locally. Even if the device is invaded and stolen, it will not lose security information. In practice, many APs are placed in public places. If the key, SSID, and other security information are stored locally, once theft threatens the security of the entire network, the wireless AP is installed due to its zero configuration. Once the power is lost, no information is saved. To avoid invasion.

3, support flexible topology: AP allows a variety of deployments, which can be directly or indirectly connected to the management of its wireless LAN controller. The wireless controller and the wireless AP can isolate any router or switch. As long as they are connected together in a wired network, the wireless AP can automatically find the wireless controller to register.

4. Automatically setting transmission power and allocating radio frequency channels: Automatically setting transmission power and allocating radio frequency channels to optimize the size of RF units and meet the requirements of radio frequency channels in various countries. When an individual AP fails, the wireless controller automatically adjusts the power of neighboring APs to compensate for the signal dead zone.

5, identity-based networking: According to the user name to distinguish between user rights, different from the traditional WLAN network through the access of the wired switch port user rights are divided, and can be the user's location, bandwidth, and roaming historical data Record tracking.

6, to provide enhanced security and seamless roaming: Through this identity-based networking features, improved user group authentication access control, always forced roaming policy and monitoring of bandwidth uغير مجاز مي باشدe to achieve enhanced wireless LAN Security, to achieve a seamless user mobility and freedom, which can be secure connection and roaming, multiple authentication access at a time, eliminating the need for re-authentication under different APs.

7. Security Management: Intrusion detection is provided. The dedicated AP can continuously scan the airspace to provide 24/7 protection for environments requiring higher security. Once there is a rogue access point in the wireless network, the wireless AP reports the corresponding alarm to the wireless controller and displays it through the network management software.

6. Wireless AP Power Supply Solution Since there are a large number of AP devices in this wireless network, the AP deployment position is adjusted according to the actual coverage effect. It is difficult to provide local power supply on the completed buildings. APs are mainly used for outdoor coverage. On the outside, the local power supply problem to the AP is more difficult. The standard 802.3af implements power to the AP. By superimposing a power supply or an embedded switch at the aggregation switch, the data can be transmitted to the AP at the same time through the Ethernet cable, and the power supply distance is up to 100 meters, which meets the requirements of actual networking.

However, APs in some areas need to be placed outdoors, that is, they must be used in conjunction with the outdoor chassis. To ensure that cold weather cold-working outdoor built-in electric heating panels, in addition to providing POE power supply for the AP, the chassis needs to be locally AC power.

PCD Saw Blade

Chemicals,Travel Products Co., Ltd. , http://www.nschemicalindustry.com


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The combination of color value and quality, intelligent projection is so easy to use!

Since the establishment of the brand, Cool LeTV has insisted on finding breakthrough points in handheld micro projectors. I have used a variety of Cool LeTV projections that are comparable to home televisions. For example, the famous millet TV, LeTV or Hisense TV lacks handheld micro-projection. The degree of portability and غير مجاز مي باشدt performance, from the results of multiple experiences, handheld projection may replace the home television in the future to meet the home theater experience.

Whether it is domestic cool music, or overseas BenQ projection, in solving the "hand-held micro-projection" dim light industry problems, can also present a bright daylight during the day, have a great deal of effort, the flow of brightness is useful? In other words, the bigger the Q9 flagship is, the more polished it is, the less polished it is; the Q7 flagship is polished on brightness, and the brightness is 200% of that of Q6, which is more than double the number of times. It is therefore suitable for most mobile conferences, mobile commerce, small and medium-sized training and education, etc. use.


High-brightness high-current density LED, so bring a high-definition picture, so as to experience the cinema experience at home, I experienced the Q7 flagship, not only the appearance of compact, but also high performance, get relatives at home and later scrambling "Grab" play, Q7 flagship with efficient three-channel light engine, light machine efficiency has been greatly improved.


5000mAh lithium polymer battery, only 270cc volume is built-in more than 5000mAh battery, probably the endurance of two smart phones, and then from the back point of view, configure the daily interface required to facilitate docking game consoles and other equipment, "projection "Playing games" is also an extremely good choice. From the author's point of view, the portability of projection is the most significant.


The Q7 flagship adopts 7-piece full-precision precision aspheric high-definition lenses, compressing the optical path to shorter lengths. From the actual renderings, the color, brightness, and screen size all meet the standard of the product price, and the غير مجاز مي باشدt performance is extremely high.

From the above information, what are your views on Cool Q7 Ultimate? Welcome to leave a comment.

Smart TV/box information can focus on smart TV information network sofa butler (http://), China's influential TV box and smart TV website, providing information, communication, etc. on TV boxes, smart TVs, smart TV software, etc. Answering questions.

                   

Generator Spare Parts

Carbon Brush,Automatic Voltage Regulato,Electric Generator Motor

Bison Machinery Co., Ltd. , http://www.tzengine.com


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Jennifer Flower underwear for women budding buds

Jennifer underwear brand : a woman budding flower bud Jennifer underwear brand so that a woman's figure to be more wonderful presentation, simple and stylish style design, with the most popular elements nowadays, so that women feel the graceful figure at the same time Can understand the side of their own fashion personality.

珍妮花 - Jeniform


Jennifer's design using the finest fabrics, comfortable and soft, like a woman wrapped in water, and women share the charm.

珍妮花内衣让女人如含苞待放的花蕾



Jennifer fashion underwear brand underwear. Unique product design will show the most youthful side of women, as long as the Jennifer brand underwear, women's figure will not lose glory with the pasغير مجاز مي باشدe of time, Jennifer brand underwear will make women want the body to budge The bud has the same radiant attractive radiance.

high waist panty

high waist panty,High Quality high waist panty,high waist panty Details, Chengdu Freedombeauty Technology Co., Ltd.

Customize bra set Co., Ltd. , http://www.illicio-underwears.com


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Full-Automatic Double-Line Hot-Sealing & Hot-Cutting Vest Bag Making Machine

                            Model NO.: CHZD-A

                       

   

                            Layer: Double

                       

   

                            Machine Type: Bag Forming Machine

                       

   

                            Computerized: Computerized

                       

   

                            Type: Plastic Bag Making Machine

                       

   

                            Power Capacity: 12.5kw

                       

   

                            Packing Details: Wooden Cases

                       

   

                            Delivery Time: 20-25 Working Days

                       

   

                            Width of Bag Making: 200-400mm

                       

   

                            Length of Bag Making: 300-600mm

                       

   

                            Bag Making Speed: 150-300PCS/Min

                       

   

                            Trademark: CHENGHENG

                       

   

                            Transport Package: Wooden Cases

                       

   

                            Specification: SGS

                       

   

                            Origin: China

                       

   

                            HS Code: 8441200000

                       

 

                   
Full-Automatic Double-Line Hot-Sealing & Hot-Cutting Vest Bag Making Machine

Full-Automatic Double-Line Hot-Sealing & Hot-Cutting Vest Bag Making Machine
Full-Automatic Double-Line Hot-Sealing & Hot-Cutting Vest Bag Making Machine
Full-Automatic Double-Line Hot-Sealing & Hot-Cutting Vest Bag Making Machine
Full-Automatic Double-Line Hot-Sealing & Hot-Cutting Vest Bag Making Machine

Brief Introduction :
New designed super high speed T-shirt bag making machine ,is special for making T-shirt bag ,which is two lines high speed production, easy to operate .high output ,special servo motor driver.
Features:

  1. Unwinding tension with AC inverter automatic control .
  2. Turnover sealing knife ,easy clean design.
  3. The whole set of bag has design of swaying ,no paste between two bags mouth.
  4. Fully automatic tacking of whole set and leveling stack design.
  5. Multi-term automatic warning ,automatic stop design .
  6. Finish stack bags with fold device.
Optional
  1. V2 model with optional 300pcs/min(line speed 150m/min)

Model CHZD-A

450×2

400×2

Max. Width 200-400mm×2 200-350mm×2
Max. Length 300-600mm×2 300-600mm×2
Bag-making Thickness 0.01-0.05mm 0.01-0.05mm
Bag-making Speed 200-250pcs/min×2 200-250pcs/min×2
Air Pressure 10HP 10HP
Main Power 12.5kw 12.5kw
Weight 2600kg 2500kg
Overall Dimension 7000×1600×1800mm 7000×1500×1800mm


Main equipment:

Taiwan Delta Servo motor

Taiwan Delta  inverter

Germany Sick photoeletric

Schneider low voltage electrical apparatus


Full-Automatic Double-Line Hot-Sealing & Hot-Cutting Vest Bag Making Machine

Our advantage:

1.Free installation and ajustment.(for consumers purchase more than 0000 only)
2.Five years free after-sales service(No charge for changing parts) and mechanical parts lifetime warranty.
3.We will offer you the professional answers about the relating machines in 24 hours.

                           

Outdoor Product

Coffee Cup,Promotional Gifts,Stainless Steel Mug

Coffee Pot,Bottle Co., Ltd. , http://www.cnthermos.com


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Haichang Ocean Park’s revenue and reputation for the 11th Golden Week

From October 1st to August 8th, the National Day holiday and the Mid-Autumn Festival meet in a twin-day period, and the 8-day long holiday in conjunction with the holiday has made the excitement of tourists from home and abroad particularly high. According to statistics, Haichang Ocean Park’s revenue during the golden week of 2017 exceeded 100 million yuan, an increase of nearly 20% compared to the same period of last year. Its performance has reached new heights, and it has received extensive attention and coverage from foreign media, CCTV, and key provincial and municipal media.

海昌海洋公园十一黄金周营收口碑双丰收(最新)140.png

Complete security guarantees, innovative measures to serve tourists

In response to the peak passenger flow during the National Day and the protection of the order of tourism, Haichang Ocean Park's projects have summarized past Golden Week tourism reception experience and increased safety management and relief efforts in important areas such as scenic spots, parking, ticket sales, and performance venues. There were no security incidents or major visitor complaints during Golden Week. In order to relieve the irritated emotions produced by the queuing of tourists, we have continued to improve various details of services and improve the quality of service through interactive sessions such as live polar animal show shows, small gifts and facial paintings.

海昌海洋公园十一黄金周营收口碑双丰收(最新)324.png

海昌海洋公园十一黄金周营收口碑双丰收(最新)326.png

Join hands with "Where is my father's fifth season?"

During the 11th Golden Week of Haichang Ocean Park, they cooperated with the popular variety show "Where Did Dad Go to the Fifth Season" to carry out brand IP cooperation. The activities were jointly promoted online and offline, covering 8 major cities in the country, and opening a double festival "to come Haichang Ocean Park, with everyone to see "Where is my father to go to the fifth quarter," the joy of the boom. The star guest Liu Genghong recorded the exclusive ID video for Haichang Ocean Park. The project carried out the theme “Where is the Dad?” theme activity, interacted with the visitors with joy and prizes, and attracted parents and families from all over the country to come to the park to experience and was deeply loved by the children. .

海昌海洋公园十一黄金周营收口碑双丰收(最新)541.png

海昌海洋公园十一黄金周营收口碑双丰收(最新)543.png

The celebrity joyful and entertaining performance, 100% of marine land interaction

During the National Day, Haichang Ocean Park launched nearly a thousand rich performing arts programs across the country. Dolphin and white whale large-scale interactive performances, sea concerts, ocean circus, sea bottom moon, float parade and other children together with the family into the magical marine joy, close interaction with marine animals, attracted tourists bursts of applause. Laughter constantly.

海昌海洋公园十一黄金周营收口碑双丰收(最新)689.png

海昌海洋公园十一黄金周营收口碑双丰收(最新)691.png

Creative themed activities are popular and do not stop there

Haichang Ocean Park has long been dedicated to popular science education and entertaining. During the National Day, many projects across the country organized many creative topics and popular science activities. The Space Shuttle Exhibition, the Submarine Laboratory, the Penguin Caravan, and the world's three major IP exhibitions were not only deeply loved by children, but also attracted many young customers to stop watching. .

海昌海洋公园十一黄金周营收口碑双丰收(最新)817.png

海昌海洋公园十一黄金周营收口碑双丰收(最新)819.png


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Pet Clothing Ornament

Vehicle Tracker Personal Tracker Watch Co.,Ltd , http://www.chvehicletracker.com


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Deep-well pump applications and its selection of several major points

The most important feature of deep well pump is that the motor and the pump are integrated into one pump. It is a kind of pump immersed in the underground water well for pumping and conveying water. It is widely used in farmland irrigation and drainage, industrial and mining enterprises, urban water supply and drainage and sewage treatment. Since the motor is submerged in water at the same time, the structure requirements for the motor are more special than those of the general motor. The structure of the motor is divided into four types: dry, semi-dry, oil-filled, and wet.

Deep well pump selection:

(1) Select a multi-stage submersible pump based on the maximum allowable extraction volume of the source well. The pump's pumping volume must be consistent with the actual water inflow in the well. The pumping capacity must be equal to or slightly less than the actual extraction volume of the source well, otherwise strong pumping will inevitably occur, which will not only shorten the service life of the deep well submersible pump, but will also filter The net has been destroyed, causing the gushing of sand to continue, even causing the well to be scrapped.

(2) The diameter of the deep well submersible pump must be consistent with the diameter of the wellbore. In order to make the deep well pump get up and running smoothly, the groundwater has room for rapid collection when pumping, and the resistance of the water pump can be reduced by the resistance. The diameter of the wellbore of the lift pipe and the pump body should be larger than the maximum diameter of the pump body by 20-40mm, ie The annular gap between the maximum diameter of the pump body and the borehole wall must be 10 to 20 mm in order to extend the service life of the submersible pumps in wells and deep wells.

(3) Deep well submersible multi-stage pump head down well position The pump head of the deep well submersible pump must not be placed in the position of the filter tube (flower tube), but must be placed in the well wall tube (real tube) position, otherwise it will surge when pumping. Sand will not stop or destroy the well. According to the interpretation of the electric measurement curve of the exploration hole, it is decided by both wells A and B according to the hydrogeological conditions (buried depth of aquifer, aquifer thickness, aquifer lithology) and pump operation conditions of the well and adjacent water wells. The well's well construction structure (well diameter, manifolds, real pipe location), well completion depth, and pump selection ensure that no problems occur in the future when the pumps and pumps are operated.

(4) According to the allowable exploitation amount of the water source well, select the deep well submersible pump, determine the specifications and model of the deep well submersible pump according to the inflow of the water source well under the conditions allowed by hydrogeology, so as to determine the reasonable structure of the water source well.

(5) Select the deep well submersible centrifugal pump according to the total head loss. According to the deep well submersible pump to pump groundwater from the pump head to the surface pool or water tower, the total head pressure required to select the deep well submersible pump diameter, head (stage) and power. Water pressure increases in proportion to the number of impellers flowing through it. The deep well pump's impeller is immersed in water and only lifts without suction. The rated head and the actual operating head of the pump must not differ too much and must not be higher than 25% of the actual head. The high pump lift, the required motor power, easy to cause the pump to have a larger string, the light wear the impeller and the leaf shell, the weight of the bearing in the shell (from the limit role) easy to stick with the pump coupling, Causes the pump not to run and the motor overload winding will burn out.

If a high-lift pump is used for low head pumping, its flow will inevitably increase, even outside the operating range, with large flow, low efficiency, and high energy consumption. On the surface, it seems that pumping speed can be increased. Pumping efficiency is improved, but it is actually not worth the gains. It is not advisable to promote it. When the flow rate of the pump reaches or exceeds the maximum extraction volume of the well, the structure of the filter layer outside the well pipe will be damaged. In light cases, a large amount of sand will enter the well and the wellhead Sinking near the ground will endanger the safety of the well. In addition, the pump in the long-term high head, large flow, low efficiency, high-speed operation, the water flow rate of the pump is accelerated, will destroy the chemical balance of groundwater, so that dissolved substances in the water precipitation, precipitation in the filter inlet gap or gap , Speed ​​up scaling, resulting in plugging of the filter, and increasing clogging with time, the pump will be subject to corrosion and cavitation and advance the use and characteristics of deep well pump:

The QJ well submersible pump is an energy-saving product designed according to national standards. It is widely used in farmland irrigation, water supply and drainage of industrial and mining enterprises, and people and livestock water in plateaus, mountain areas, and so on.

This type of pump is composed of a QJ submersible pump and a YQS-type submersible motor, and is submerged under water for operation. The utility model has the advantages of simple structure, small size, light weight, convenient installation and maintenance, safe operation, reliability, high efficiency and energy saving.

The QJR series well heat-resistant submersible pump is a heat-resistant submersible electric pump directly integrated with a well-contained heat-resistant submersible three-phase asynchronous motor. The heat-resistant water temperature can reach 100°C. It is a submerged well and extracts geothermal energy. Water is an effective tool; geothermal is one of the cheapest, cleanest, most inexhaustible new energy sources and is now widely used in heating, medical, bathing, breeding, planting, industry and agriculture, factories and mines, entertainment services, health facilities, etc. aspect. It has a pump unity, simple structure, reliable operation, no noise, excellent performance, high unit efficiency, easy installation and maintenance; and has many advantages such as heat resistance, anti-corrosion, anti-aging, etc. It is the latest product of the embankment taking geothermal water.

Deep well pump types:

1, vertical vertical use, such as in the general wells;

2, oblique use, such as in the slope of the mine lane;

3, horizontal use, such as the use of deep well pump in the pool of work:

The suction tube and the pump must be filled with liquid before starting the pump. After the pump is turned on, the impeller rotates at a high speed, and the liquid rotates with the blades. Under the action of centrifugal force, it flies out of the impeller and shoots out. The ejected liquid gradually slows down in the diffusion chamber of the pump casing, the pressure gradually increases, and then the pump Outlet, discharge pipe outflow. At this time, the vacuum is formed in the center of the blade due to the liquid being thrown around to form a vacuum and low pressure area with no air and no liquid. The liquid in the liquid pool flows into the pump through the suction pipe under the action of atmospheric pressure at the pool surface. It is continuously pumped up from the liquid pool and continuously discharged from the discharge pipe.

Plastic Medication Packaging

Plastic Medication Packaging/Plastic Box

Application:Plastic Medication Packaging can be widely used in the blister packaging of vial ampoules ,any bottle of medicatical,health care prodcuct.

Plastic Medication Packaging property.

1.Plastic Medication Packaging can be divied to two types:Flocking Plastic Medication Packaging and Non-flocking Plastic Medication Packaging.

2.Excellent transparency

3.Single layer, double layers, Corrugate available

4.Let the products looks more beautiful and good sale.

plastic medication packaging Plastic Ampoule BoxPlastic Medical Packaging

Plastic Medication Packaging,Disposable Plastic Medication Packaging,Blister Plastic Medical Packaging,Clear Medication Plastic Blister Packaging,Medication Blister Packaging,Plastic Ampoule Box

Hebei Shuangli Packaging Products Co., Ltd. , http://www.shuangli-plasticpackaging.com


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Identification of mulberry traits

Character identification

Mistletoe: The product is a stem with leaves. Stems and branches, often 2 to 5 forked branches, about 30cm long, diameter of about 0.3 ~ 1cm.

The surface is yellow-green, gold-yellow or yellow-brown. With longitudinal wrinkles; nodes enlarged, with branches or branches marks. Lightweight, crisp, easy to break, uneven profile, strong fibrous, radial texture. Leaves are born on branches, easy to fall off, leathery, few sessile, oblong-lanceolate or oblanceolate, 2-7 cm long, 0.5-1.5 cm wide, obtuse-ends, base cuneate, entire, surface Yellow-green, yellow-brown or golden yellow, with fine wrinkles, 5 veins, and 3 in the middle. Gas odor, slightly bitter taste, chewing sticky.

Sansha: This product is a stem with leaves. Branches are round, 2~5cm long, 0.2~1cm in diameter; surface is red-brown or gray-brown with many brown punctiform lenticels; hard, irregular cross-section, reddish-brown wood; leaves opposite, thin Crispy, mostly broken, with short handles, complete with oval or long oval after flattening, whole, 3–7cm long, 2–4.5cm wide, yellow-brown on the surface, both sides of growing leaves glabrous, young branches with leaves Brown stellate hairs. Qi, tasteless, slightly astringent.

1. Mistletoe

Mistletoe stem (diameter 5.5mm) Cross section: Epidermal cells are oblong, outer yellowish-green stratum corneum, wavy striations, thickness 2.5-60μm, thickness of stratum corneum equal to or exceeding that of epidermal cells. The cells contain chloroplasts and starch grains. Because the marrow is often on one side, the cortex is uneven, the narrowest part is only about 10 cells, the widest point of more than 30 layers of cells, the cell contains starch grains and chloroplasts, a small number of cells containing mucus and calcium oxalate clusters, Diluted calcium oxalate crystals; old stems in the cortex more stone cells, single or several groups, fiber bundles 8, and 8 beam ring pulp fibers corresponding. Vascular bundles outside the tough type, phloem is narrow, 5 to 8 columns of cells, thin-walled, containing starch grains, sometimes visible small calcium oxalate crystal; formation layer is not obvious, wood ray width 5 to 8 columns of cells, scattered fibers Bundles; There are many fibers around the catheter, and there are a few irregular cells. In the pith, the parenchyma cells contained the same cortex. Leaf cross-section: full shape ribbon, both ends blunt, veins are not prominent, papillary or wavy, yellow-green, stomata on both sides; mesophyll tissue does not differentiate, a total of about 10 to 15 layers of cells, intracellular oil droplets , starch grains and calcium oxalate clusters. Outside the vascular bundle, the main vascular bundle has fiber bundles above and below.

Powder and dissociated tissue identification characteristics: powder pale brown.

(1) Epidermal cells are flat in the cross-sectional view, with a very thick cuticle (25 to 60 μm), yellow-green or golden yellow.

(2) The surface of the epidermal cells is polygonal and the stomata is flat.

(3) The plexiform sheath fibers are slender, with a length of 600-1500 μm, a diameter of 10-30 μm, and sharp ends at both ends.

(4) Wood fibers have a length of 110 to 620 μm and a diameter of 2 to 28 μm, and are irregular in shape.

(5) The heteromorphic cells have large cells, one end blunt, the other end truncated, and the wall is thick and micro-woody.

(6) Single or several clusters of stone cells, colorless, light yellow or golden yellow, square, triangular or irregular shape, diameter 38 ~ 106μm, length 60 ~ 205μm, wall thickness 3 ~ 35μm, layered pattern, there are Not so obvious, pitted.

(7) The catheter is mainly double-threaded, and it has another thread and reticulate catheter with a diameter of 8 to 50 μm. The reticulate catheter has a short molecule and a fine mesh. Some double-threaded catheters and threaded catheters are thickened with tri-generation.

(8) There are many clusters of calcium oxalate clusters, scattered or 1 to 2 in the parenchyma cells, some central depression, diameter 14 ~ 54μm, short blunt corners.

(9) Calcium oxalate has less square crystals, which are oblate, oblong, or thin-columnar, with a diameter of 8 to 30 μm and a length of up to 50 μm.

(10) The starch granules are sparse, single-grained spherical, with a diameter of 3 to 10 μm, and the stratification is not obvious.

2. Loranthaceae

Stem (4mm in diameter) cross section: more than 10 rows of cells in the cork layer and brown cells in the outer cork cells. Epidermal cells sometimes remain. The cortex is narrow, about 4 to 7 rows of cells containing brown matter and starch granules. The number of stone cells is numerous, and it forms a ring zone with the buckwheat fiber bundles. The phloem is narrow and there are stony cells or stone cell clusters in the ray. The formation of layers within the beam is obvious. Narrow wooden rays, 1 to 5 rows of cells. The catheters are in a single row or 2 to 3 clusters surrounded by a large number of wood fibers and wood parenchyma cells. There is a group of stone cells in the pith, and parenchyma cells contain starch grains and brown substances. The stone cell contains calcium oxalate cubes or brown substances.

Mushroom stem cross-section diagram

Leaf cross-section: the upper and lower epidermis are all stomata, cells are small, rectangular. The upper surface of the epidermis has one epithelium under the skin; the upper part of the palisade tissue is composed of 3 to 4 rows of cells with longer cells; the lower one is composed of 2 to 3 rows of cells with short cells arranged neatly and tightly; the middle is sponge tissue with loose arrangement inside. Contains small round calcium oxalate clusters, and small oxalic acid crystals scattered, occasionally stone fine

Camellia oleifera

Camellia oleifera

Cell. The main veins bulge above and below, vascular bundles 3, external toughness, fiber bundles on both the upper and lower sides, there are more stone cell clusters containing calcium oxalate crystals between parenchyma cells.

Powder and dissociated tissue identification characteristics: powder yellowish brown, gas micro, bitter.

(1) There are many kinds of stone cells, such as square, round or triangular, and some have branches, and some are thick on one side and thin, with stratified veins. The cells contain calcium oxalate crystals or brown substances.

(2) The plexiform sheath fiber is slender, tip apex, long 250 ~ 915μm, diameter 13 ~ 33μm, the wall is extremely thick, the cell cavity is narrow or not obvious, with a small number of pits; a small number of plexiform sheath thin fiber wall, large cell cavity.

(3) Longer wood fibers with sharp ends.

(4) The catheters are mainly bordered pits. The length of the catheter's molecules is 33 to 100 μm, and the diameter is 21 to 35 μm. The bordered pits are angular and closely spaced; some form a pit field; occasional thickening of reticulates occurs. Another ladder pattern, textured and threaded catheter.

(5) Calcium oxalate crystals scattered or in stone cells.

(6) Calcium oxalate clusters are scattered in or in mesophyll tissues and are round in shape.

(7) The wood parenchyma cells are long, slightly thickened, woody, and pits are sparse.

(8) The pith cells are round, wall thickened, and woody, with different sizes of pits.

(9) Cork cells are oblong or polygonal in shape and contain brown substances.

(10) The starch granules are round in shape and have a diameter of 5 to 13 μm. They have umbilical dots or flying birds. The lamellae are not obvious, and the multiple grains are small and consist of 2 granules.

(11) Most of the stacked stellate hairs are broken and yellow, and the complete ones are 3 to 5 folds, with 3 to 5 branches per pile, and the ends are tapered.

(12) The stomata is flat and the secondary cells have a radial texture.

Physical and chemical identification

1. Take this product coarse powder 2g, add ethanol 20ml, reflux extraction for 15min, let cool, filter. Take the filtrate 2ml, add a little magnesium powder, add a few drops of hydrochloric acid, red. (Check flavonoids)

2. Take 1 item under the filtrate: drip on the filter paper, hot air drying, drop 2% aluminum trichloride test solution, dry, yellow, set the UV lamp (365nm), showed yellow-green fluorescence. (Check flavonoids).


Antihypertensive Drugs

Antihypertensive Drugs 

1. It can control blood pressure, used to

treatment hypertension. 


 

2. It is divided into acting on central

nervous system, vascular smooth muscle, adrenal glands to nerve endings

drugs. 


 

3.Drugs 

Antihypertensive Drugs 

Captopril, Metformin, Valsartan

  Dispersible Tabs 

 

4.Preparation. tablet, capsule etc. 

Antihypertensive Drugs,Captopril Tablets,Metformin Tablets,Captopril Antihypertensive Drug

Shijiazhuang G-House Trading Co.,Ltd , http://www.g-housemedicines.com


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China to improve the level of doors and windows hardware to help save energy

China to improve the level of doors and windows hardware to help save energy

With the advocacy of green buildings and the construction of intelligent buildings, people have put forward higher requirements for the quality of life and the changes in life brought about by the development of science and technology. Doors and windows have been given more connotations and expectations. The intelligence and humanity of the door and window hardware industry have been newly recognized by people.

China's door and window hardware manufacturing enterprises began to develop from the southeast coastal areas, mainly in Guangdong, Zhejiang, Shandong and other places. Affected by the level of economic development and climatic conditions, there is a big difference in the demand for doors and windows in each region. And in the economically underdeveloped regions of the country, the door and window hardware fittings used are relatively simple and inexpensive. The price of hardware for each set of doors and windows is about 18 yuan. The middle and high-grade real estate in the developed and northern regions of the developed economy is mainly used for the Inner Pingkai. Hanging hardware system and internal hardware system, these hardware systems are mostly imported brands and a few domestic famous brand products.

Therefore, domestic manufacturers of door and window hardware not only have to lay a good brand, but also must firmly grasp the technology, always grasp the needs of consumers, and constantly innovate and constantly improve. Door and window hardware as accessories in the doors and windows, when providing support for doors and windows, its advantages and disadvantages directly affect the energy saving effect of doors and windows, therefore, high quality door and window hardware plays an important role in building energy efficiency. In addition, the Prospect Industry Research Institute predicts the market prospect of China's door and window hardware industry in 2013-2017. By 2017, the market size of China's door and window hardware industry will reach approximately 45.755 billion yuan. The outlook is so good that the general trend of intelligence has become overwhelming.

 

     

Mohair Roller Cover

Paint Roller Cover,Sheepskin Paint Roller Cover,Sheepskin Paint Roller Sleeve

Paint Rollers Co., Ltd. , http://www.nspaintroller.com


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