Pay attention to the suitability of choosing ppe

In recent years, with the increasing demand for security surveillance cameras, the security monitoring industry has developed rapidly. The application of surveillance cameras has evolved from individual industries to the needs of the mass market, from local monitoring to remote monitoring across regions and across provinces, from analog surveillance cameras to IP surveillance cameras with multiple advantages. With the constant pursuit of image clarity, high-definition surveillance has gradually become the industry's development trend.

High-definition monitoring advantages

For surveillance cameras, image clarity is undoubtedly the most critical technical indicator. The clearer the image, the more obvious the details and the better the recognition effect. Its advantages mainly include the following points:

Get more video information by providing high resolution images
High-definition cameras can generally achieve resolutions of 1280x960, 1920x1080, 2048x1536 or even 2560x1920. Under the same environment, HD can provide clear and detailed images, which can better capture details and make the target clear and identifiable.

More video coverage

A megapixel network camera can replace the original 2 or 3 standard definition cameras or even more with the same monitoring coverage area. For wide viewing angles and large-scale surveillance-intensive locations such as airports, transportation, bayonet, banks, and perimeters, only a small number of megapixel network cameras can be deployed to achieve the previous results.

Supports higher frame rates and high image fluency

Both 720p and 1080i/1080p can support 60 frames per second, and its image fluency is double that of standard definition. Support large-screen display, 16:9 widescreen display, can greatly enhance the user's viewing experience.

High-definition picture quality provides favorable conditions for intelligent monitoring

HD surveillance can provide more content, more detailed high-definition picture, thus creating conditions for intelligent monitoring applications.

Analysis of Problems in HD Monitoring Application

HD network cameras have made a qualitative leap in image clarity, but they have also brought a series of real problems to high-definition surveillance systems. The three core issues to be solved by HD monitoring are: bandwidth issues, display problems, and storage problems.

Bandwidth issues

Due to the current limited network bandwidth, the high bit rate brought by high-definition video has become its biggest promotion bottleneck. How to transmit as high quality video as possible with the lowest possible bit rate is the top issue that HD surveillance needs to solve. At the same time, due to the heterogeneity of the network, different networks have different channel characteristics. Different users enjoy different network bandwidths. Even the bandwidth of the same user may change at any time. With the development of the monitoring field, various user terminals have the need to connect to monitoring video. For example, the network bandwidth of the local area network monitoring network is ideal, and users want to browse high-quality video. However, due to the limited bandwidth in the field of mobile phone monitoring, users value the low code. Rate video fluency. How to adapt to these different bandwidth environments is also a problem that HD surveillance devices need to solve.

Display problem

Compared with standard definition video, the amount of high-definition video information is abundant, and the corresponding performance requirements for decoding and display are also greatly improved. For example, currently mainstream PCs can easily achieve 8-channel D1 standard definition video decoding display, but if the front end is 1080P HD video , can barely decode and display 1 way.

For large surveillance camera platforms, if all HD video is used, server decoding pressure will be great.

Storage problem

The increase in image resolution will inevitably consume more storage space. Using H264 encoding algorithm, in order to ensure clarity, the code stream needs to be maintained at 6Mbps or more, which is about 4-8 times of standard definition video. Under standard definition video conditions, a 16-channel DVR built-in 8 fast 2T hard disk can meet the long-term video storage requirements. In high-definition monitoring, this time will be greatly shortened, which will bring about increased storage غير مجاز مي باشدts.

Rubber Hose

Rubber Hose,Water Rubber Hose,High Pressure Rubber Hose

Unisite Marine Engineering Inc. , http://www.nbmarineplatform.com

Product Name Specification Material Steel/Origin Price (Yuan/Ton) Than Yesterday Last Week, General Line Φ6.5mm Q235 Tong Steel 4970 0 240 620 Normal Line Φ8mm Q235 Tong Steel 4970 0 240 620 High Line Φ6.5-10mm Q235 Xilin 5020 0 240 620 High Line Φ6.5-10mm Q235 Steel 5020 0 240 620 High Line Φ10mm Q235 Beitai 5020 0 240 620 High Line Φ10mm Q235 Xinfu 5020 0 240 620 Rebar Φ12-14mm HRB335 Steel 50000 200 600 Rebar Φ12-14mm HRB335 Xilin 5000 0 200 600 Rebar Φ12-14mm HRB335 Ukrainian Steel 5000 0 200 600 Rebar Φ16-25mm HRB335 Tong Steel 4900 0 200 600 Rebar Φ16-25mm HRB335 Xilin 4900 0 200 600 Rebar Φ16 -25mm HRB335 Jianlong 4900 0 200 600 Rebar Φ12mm HRB400 Tonghua/Xilin 5050 0 200 650 Rebar Φ14mm HRB400 Tongsteel/Westwood 5050 0 200 650 Rebar Φ16-25mm HRB400 Tongsteel/Westwood 5020 0 220 700 Hot Roll 2.0mm*1050*C Q235 Angang (1700) 5750 0 210 770 Hot rolled coil 2.5mm*1050*C Q235 Angang (1700) 5650 0 240 750 Hot rolled coil 2.75mm*1050*C Q235 Angang (1700) 5600 0 280 770 Hot rolled coil 3.0mm*1250*C Q235 Angang (1700) 5550 0 260 750 Hot rolled coil 4.75 Mm*1500*C Q235 Angang (1700) 5350 0 100 700 Hot rolled coil 3.0mm*1250*C Q235 Benxi Steel 5550 0 260 750 Hot rolled coil 5.5-7.5mm*1250*C Q235 Hot rolled steel 5350 0 100 700 Roll 3.0mm*1250*C Q235 Steel 5550 0 260 750 Hot Roll 5.5mm*1250*C Q235 Tang Steel 5350 0 100 700 Hot Roll 3.0mm*1250*C Q235 Steel 5650 0 360 850 Cold Rolled Sheet 1.0 Mm*1000*2000 Q195 Angang 6650 0 370 800 Cold rolled sheet 2.0mm*1000*2000 Q195 Ansteel 6550 0 370 800 Cold rolled sheet 2.5mm*1000*2000 Q195 Ansteel 6450 0 370 750 Cold rolled sheet 3.0mm*1000*2000 Q195 Angang 6800 0 470 900 Cold-rolled sheet 2.0mm*1000*2500 Q195 6500 0 400 850 cold rolled steel sheet 1.0mm*1000*2000 Q195 This steel 6550 0 370 750 Puzhong 8mm Q235 Tiansteel 6150 0 0 450 General Medium Plate 10mm Q235 Sky Steel 6050 0 150 700 Puzhong Plate 16-25mm Q235 Sky Steel 5850 0 100 770 Low Alloy Plate 16-25mm Q345 Sky Steel 6000 0 140 760 Low Alloy Plate 16-25mm Q345 Jinan Steel 6050 0 150 610 Low Alloy Plate 16-25mm Q345 Angang 6050 0 150 610 Color Coil 0.426mm*1000*C SGCC Tianjin Xinyu 7050 0 0 300 Color Coil 0.476mm*1000*C SGCC Tianjin Xinyu 6950 0 0 350 Galvanized Coil 0.5mm*1000 *C SGCC Hengtong 6600 0 4 00 700 Galvanized coil 1.0mm*1000*C ST02Z Bengang 6300 0 300 800 Welded pipe 1 inch *3.25mm Q235 Birch forest 5100 0 160 Welded pipe 2 inch *3.5mm Q235 Birch forest 5000 0 0 100 Welded pipe 3 inch * 4.0mm Q235 birch forest 5000 0 0 100 I-beam 12# Q235 A-steel 4950 0 0 600 I-beam 26# Q235 Angang 5050 0 0 350 Channel 16# Q235 A-steel 4950 0 0 600 Channel 25# Q235 Laigang/ 0 0 0 Angle Steel 50*5mm Q235 Tong Steel 4850 0 0 450 Angle Steel 100*10mm Q235 Tong Steel 4800 0 0 300

Bike Handlebar

Bicycle Handlebar,Folding Bicycle Handlebars,Aluminum Bicycle Handlebar

Freeman Bicycle Co., Ltd. , http://www.bt-idea.com

A new method of synthesizing diclofenac drugs invented by Prof. Chen Fenji of the Department of Chemistry at Fudan University has broken through the traditional production processes that have been adopted at home and abroad for 30 years, has greatly reduced the emission of pollutants in production, and drastically reduced raw material غير مجاز مي باشدts. 1/2 of traditional craftsmanship.

Diclofenac sodium, also known as Diclofenac, is an effective anti-inflammatory analgesic with wide application. As early as 1966, the synthesis of diclofenac sodium was first reported in Switzerland. Until 1974, the production of diclofenac sodium with benzoic acid as the raw material was first realized in industrial production. Diclofenac sodium has since become one of the top ten best-selling drugs in the world.

According to reports, after more than ten years, Prof. Chen Fenji invented diclofenac sodium with o-nitrotoluene as the starting material, phase transfer catalysis, polymer-dispersed palladium catalytic reduction, condensation, and aromatization. Synthesis of new technology, the yield of each step is more than 90%, the total yield of more than 88%. The process drastically reduced the raw material غير مجاز مي باشدt of diclofenac sodium and significantly improved the quality of the product, forcing Switzerland, Japan, the United States, Germany and other countries to suspend production and switching to importing such drugs from China. The technology invented by Prof. Chen Fenji has achieved industrial production in domestic pharmaceutical companies and has occupied 80% of the international market share.

Jewelry Item

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Keychain,Lapel Pin Co., Ltd.  , http://www.nbkeychain.com

2016-03-30 Powerhouse's modern wooden structure construction relies on 100 years of solid wood processing experience, excellent team of experts, and professional service personnel.
In the solid wood processing and milling type, floor processing, preferred stock preparation, finger-joint puzzles, European-style wooden windows, wooden house wooden structure production leadership.
German power glued wood beam production process: Preferred - finger-joined - planed - glue - spell wooden wood production and application of wood is very concerned about the production of technical and technological standards to meet the requirements, matching key equipment is a must of.

10FT Container

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Putian Integrated Housing Co., Ltd. , http://www.zjprefabhouse.com

At present, there are some misunderstandings about the use of infrared LEDs. The most important ones are:

First, the importance of heat dissipation is relatively neglected:

We often use too small heat sinks or no heat sinks at all. It is important to know that poor heat dissipation can result in a high operating temperature of the chip resulting in a rise in infrared wavelengths and a decrease in the efficiency of the photoelectric conversion. Wavelength rises higher than 850nm, causing the camera CCD to become less sensitive to light, that is, worse night vision. Low photoelectric conversion efficiency is insufficient brightness. Often a few centimeters of heat sinks will have a great effect on the small soldiers.

Second, the wrong hand touch to test the temperature:

Frequently people were startled by themselves, because man's hands on the shell (or heat sink) that exceeds 44 degrees Celsius, can not stand for less than 2-3 seconds, so feel "too hot", in fact, this temperature is not High, will not harm the normal work of electronic components. Moreover, the higher the temperature of the housing (or heat sink) is, the better the "hot" export is. "Energy is immutable" - Imagine: The outer shell (or heat sink) is not hot, is this "hot" going there? If the heat stays on the chip, it will cause the chip to work under high temperature, the night vision effect will be poor, the light decay will be large, and the service life will be short.

Third, think that larger chips must be "brighter" than smaller chips:

Therefore, it is often blindly specified that LEDs with large chip sizes are required. To know: brightness depends on the current, how much current can be used? Depends on the heat treatment, that is: heat dissipation determines the current and thus determines the brightness, rather than the size of the chip determines the brightness. In theory, the same brand of chips, regardless of size, if the same current and voltage (the same power), the same heat generated, the question is: the same heat is scattered in what area? Scattered in the pinhole-like area and scattered in the palm-sized area, the difficulty of heat treatment is very different. In terms of heat dissipation, each company has different technologies, different equipment, and different heat-dissipating materials. Therefore, the ability to handle the same “heat” in different areas is different.

For example: if the 1.2A current is provided on the 28mil chip and the 42mil chip, the voltage is slightly the same (about 1.7V), so the power is slightly the same (about 2W), and the generated heat is slightly the same. The problem is: Dispersing this 2W of heat over the area of ​​the 42mil chip is easier to handle, and it is harder to disperse it on the 28mil chip. The use of traditional silver glue to "solid crystal" packaging methods, the thermal resistance is generally 20 °C -30 °C / W, using eutectic technology package, the thermal resistance is generally 6 °C -10 °C / W, which It shows that the cooling effect is very different. The drive currents that can be used in the above two are greatly different, and the brightness is also very different.

Of course, the use of advanced heat-dissipation technology and the use of small chip packages, high current drive method is also limited, if the above 2W heat on the area of ​​the 10mil chip, even if the eutectic process package, it is currently difficult to complete the heat Export. Looking forward to the future in the cooling technology, materials, more progress, may be able to achieve the use of smaller chips, the price is lower, but the night vision effect is still more advanced infrared LED.

To sum up, the night vision effect of a large-sized chip is not necessarily stronger than that of a small-sized chip, and the quality of the heat treatment is determined depending on the quality of the heat treatment. Therefore, the eutectic process packaging technology is one of the important means for the current غير مجاز مي باشدt performance improvement and should also be the future trend.

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Jinrui Norm Parts Supplies Co., Ltd. , http://www.shsteelwire.com

Underwear , a woman's most intimate girlfriends, with a good underwear, not only can be modified stature, but also to maintain a better female body. Card Sibel so that all women in the world can find the most suitable underwear, with high quality and professional clothing to help women in the world have a comfortable, healthy and confident life.

In order to find beautiful women for most purposes, Card Sibel team came into being, this is an all-women team, because of this, they know more about the needs of the majority of female friends, devoted to create a more perfect fashion underwear products .

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Outdoor Products

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Knitted Products,Crochet Products,Judaica Items Co., Ltd. , http://www.jscrochet.com

1. Explosion-proof tools have brought security to our work personnel in flammable, explosive and corrosive workplaces. This has made our social security more complete and our staff have become more comfortable.

After the use of explosion-proof tools in our daily work, there should be a proper maintenance phase, which is crucial to the life of the tool, because if the maintenance of explosion-proof tools is not appropriate, our tools cannot be used for a long time. We serve. First of all, we need to keep the tool in a dry place. This is to make sure that some parts of the work do not get damaged.

After 20 consecutive taps in our daily work, the surface attachments of the tool should be treated, and then used after being cleaned. Do not use it continuously so as to prevent the tool from being heated due to prolonged friction. May damage our tool products.

2, after use, clean the surface of dirt and deposits, place a dry and safe place to save.

3, tapping tool products, can not be a continuous blow, more than 10 times should have an appropriate interval, at the same time to promptly remove the debris sticky parts of the product and then continue to use.

4. Wrench products must not be overpowered, and they must not be used to stretch the fasteners by using sleeves or other metal rods and hammers (except tapping wrenches).

5, cutting edge tools should be placed in the sink and gently grind the grinding wheel, not too much force and contact with the grinding wheel for too long.

6. In the actual operation of hammering tools, it is necessary to remove the oxides on the surface of the debris and the working surface to prevent third parties from hitting.

Based on the above performance and use, it is shown that aluminum-copper alloys are more suitable for normal pressure equipment and environments where explosion-proof conditions are not strict (such as gas stations, small oil depots, etc.) during normal use. The applicability of the performance of beryllium copper alloy explosion-proof tools (such as oil refineries, gas conversion stations, gas recovery plants, drilling teams, etc.).

7, before using the product to remove the surface oil, use the steel tool reference manual.

ABS Plastic Kitchen Tap

Kitchen Faucet ,Kitchen Mixer & Faucet,Basin Faucet,Kitchen Sink

Southeast Asia Selection Co., Ltd.  , http://www.nbelastic.com

Sinopec Hubei Chemical Fertilizer Plant invested 1.257 billion yuan in the conversion of coal to oil, which was completed last year and entered trial operation. In order to ensure that the impact of the production process on the environment is reduced to a minimum, the company has invested a total of more than 100 million yuan in the treatment of noise, smoke, and exhaust gas, and strives to improve the company's environmental governance through new environmental protection projects and technological transformation.
Coal-to-oil conversion of Hubei Chemical Fertilizer Co., Ltd. is a demonstration project for the implementation of energy conversion strategies for large-scale fertilizer companies in the country. Shell's advanced pulverized coal gasification technology is used. As this technology is still used for the first time in the world for large-scale fertilizer production, coupled with the need to implement domestic equipment support in accordance with national requirements, many technical problems are still being explored and conquered. In particular, during the process of convergence between trial production and new and old equipment, there have been prominent problems with noise, smoke, and irritating odors, which have had a certain impact on the lives of surrounding residents. To this end, the company has been actively rectifying and reforming. Since the construction of the coal-to-oil project in 2003, the total investment for the construction of environmental protection facilities has exceeded 100 million yuan, and sulfur-recovery devices, desulphurization devices for coal-fired boilers, and large-scale silencing equipment have been built. .

Function Auxiliary Series

Anti Sticking Softener,Anti Sticking Softening Agent,Softening Agent Special for Printing

Reactive Dye Printing Thickener  Co., Ltd. , http://www.nsdispersant.com

Glass Bottle With Infuser

Tea Strainer Bottle, Hot & Cold Brew Coffee Maker, Sport Water Bottle with a 550 ml / 20 oz capacity! A great Travel tea infuser, for on-the-go tea infusion or fruit water infuser use 

Jia Teng Tea Bottle with Infuser: 100% BPA and Lead Free. Made of strong, lightweight, heat resistant Borosilicate Glass, and with a Stainless steel tea and fruit infuser filter. 

The infuser filter can be left empty or be emptied out when finished steeping/infusing but it must be kept in to prevent leaks as it also doubles as a seal

Glass Bottle,Glass Bottle With Infuser,Infuser Water Bottle,Fruit Infuser Water Bottle

Hejian Jia Teng Glass Products Co., Ltd. , https://www.jtglassware.com

Product Name Specification Material Steel/Origin Price (Yuan/Ton) Than Yesterday Last Week, General Line Φ6.5mm Q235 Weifang 5050 80 190 610 High Line Φ6.5mm Q235 Beitai 5100 50 180 640 High Line Φ6.5mm Q235 Fushun 5100 50 220 650 High Line Φ8mm Q335 Yong Steel 5250 50 270 690 Rebar Φ10mm HRB335 Sha Steel 5110 30 180 530 Rebar Φ12mm HRB335 Sha Steel 5040 30 180 530 Rebar Φ16-25mm HRB335 Sha Steel 5010 30 180 530 Rebar Φ10mm HRB335 Pori 5120 30 280 520 Rebar Φ12mm HRB335 Buri 5060 30 190 540 Rebar Φ16-25mm HRB335 Buri 5030 30 190 540 Rebar Φ16-25mm HRB335 Jigang 4920 40 170 520 Rebar Φ16-25mm HRB335 Xicheng 4940 20 160 490 Class III Rebar Φ16-25mm HRB400 Jinan Steel 4950 0 50 380 Hot Roll 2.75mm*1250*C SS400 Bead Steel 5600 0 0 400 Hot Roll 3.0mm*1250*C SS400 Angang 5500 0 0 440 Hot Roll 3.0mm*1250 *C Q235B Shagang 5500 0 0 440 Hot rolled coil 3.0mm*1250*C Q235B Handan Steel 5500 0 0 440 Hot Roll 5.5mm*1250*C Q235 Sha Steel 5300 70 180 600 Hot Roll 7.5mm*1500*C Q235B Package / Angang 5300 70 180 600 Hot rolled coil 9.5-11.5*1500*C Q235B bag / Angang 530 0 70 180 600 Cold rolled sheet 1.0mm*1250*2000 ST12 Angang 6600 100 250 820 Cold rolled sheet 1.5mm*1250*2500 ST12 Angang 6600 100 250 820 Cold rolled sheet 1.0mm*1250*2500 ST12 Benxi Steel 6580 110 260 830 Cold-rolled sheet 1.5mm*1250*2500 ST12 Benxi Steel 6580 110 260 830 Cold-rolled coil 1.0mm*1250*C SPCC Masteel 6550 100 250 820 Cold-rolled coil 1.2mm*1250*C SPCC Masteel 6550 100 250 820 Cold-rolled Volume 1.5mm*1250*C SPCC Ma Steel 6550 100 250 820 Strip 2.5*355 Q195L Jilin Jianlong 5100 0 50 420 Strip 2.5*183 Q195L Tangshan Jianlong 5080 0 60 430 Strip 2.5*232 Q235 Tangshan Guofeng 5080 0 50 440 Strip 2.5*355 Q235 Tangshan Stainless 5080 0 30 420 Strip 3.75*685 Q235 Beitai 5050 0 70 420 Strip 4.75*685 Q235 Beitai 5050 0 70 420 Strip 5.75*685 Q235 Beitai 5030 0 70 430 Shipbuilding Plate 8mm*1800*8000 CCSB Jinan Steel 6480 80 180 580 Shipbuilding Plate 10mm*1800*8000 CCSB Jinan Steel 6380 80 180 580 Shipbuilding Plate 20mm*1800*8000 CCSB Jinan Steel 6030 180 180 600 Medium Plate 8mm Q235 New Steel 6150 100 250 750 Puzhong Plate 10mm Q235 New Steel 6050 100 250 750 Puzhong Plate 16-20mm Q235 New Steel 5900 100 250 750 Puzhong Plate 16-20mm Q235 Nangang 5900 100 250 7 50 Color Coil 0.47*1000*C SGCC China Unicom 7200 150 500 500 Galvanized Coil 1.0mm*1250*C ST02Z Benxi Steel 6550 100 550 750 Galvanized Coil 1.5mm*1250*C ST02Z Benxi Steel 6550 100 600 850 H Steel 200*200 Q235B Laiwu Steel 5650 100 650 1030 I-beam 25# Q235 Wugang 5100 100 270 550 I-beam 25# Q235 Laiwu Steel 5100 100 270 550 Channel 16# Q235 Masteel 5300 100 300 620 Angle Steel 50*5mm Q235 South Steel 5300 100 330 470 Steel 50*5mm Q235 Masteel 5360 100 320 500

PP Airless Bottle

Plastic Pump Spray Bottle,Spray Pump Perfume Bottle,Pump Bottle

Shengruisi Packaging Co., Ltd. , http://www.symakeuppackaging.com