Pay attention to the suitability of choosing ppe

With the development of audio monitoring technology and advances in pickup technology, there are now more and more widely used monitoring pickups, but many users are still confused about what kinds of pickups they should choose for different venues. Then let Guangzhou Sizheng tell everyone what The location should choose what kind of pickup.

1. Bank window/ban window/counter Many of the bank's ban windows are now equipped with bulletproof glass for security purposes. To facilitate communication, it is necessary to install monitoring microphones as communication media at the window. The relationship between the location, the distance between the window and the window is relatively close, and the audio monitoring process always needs to use the recording, so many unnecessary sounds are obviously not picking objects, such as the dialogue at the counter next door. Therefore, as a window-type monitoring pickup can choose directional pickups, directional pickups can clearly pick up a certain range of sound, such as Sizheng COTT-C1 window pickups, COTT-S1 window digital pickups and so on.

2. The indoor/meeting room/office interior, conference room, office, etc. are relatively quiet places relative to other places. In addition to clearly listening to everyone’s voices, the place’s requirements for monitoring pickups must be clearly understood. Therefore, high-fidelity pickups can be selected in the conference room, such as the COTT-C7 high-fidelity pickups such as Sizheng, COTT-C8 native-grade pickups, and COTT-S2 highly sensitive pickups. According to the above, if the space is large, like hundreds of square meters Space, the environment is more complex, more noise, you can choose Sizhen MX-K10 digital noise reduction pickups, MX-K30 dual-core digital acoustic pickups, MX-K40 dual-core digital noise reduction pickups.


3. The place where prisoners are held in prison/detention is a more serious place. The ordinary pickups can not satisfy such places. In addition to the necessary fidelity, riot protection and tamper are also very important, so that they can be picked up better. Monitor the sound within range. The normal work of the pickups is very important, because the prisoners are special people, so the above functions are very important. Places like this can choose Sizheng's COTT-C4 riot pickups and SIZ-180 UFO riot pickups.


4. There are desks in many places such as desks/desk interiors, conference rooms, offices, etc. In addition to ceiling and wall mounting, pickups can also be placed directly on the desktop, eliminating the hassle of installation. Some pickups also have USB plugs. Such as such a situation can choose Sizheng COTT-S4 interface digital pickups, if you need to install invisible, then you can choose Sizheng C0TT-C2 embedded pickups, SIZ-pinhole pickups.


5. When outdoor/outdoor is installed outdoor or outdoors, the first consideration is whether it can be waterproof, sunscreen, moisture, etc. What do you do in heavy fog weather and how do it rain? In such cases, you can choose Sizheng MX-K20 digital waterproof pickups, COTT-S8 bolted waterproof pickups and so on.

Sodium Hydrosulfite

It is widely used in the textile industry for vat dyeing, reduction agent, printing and stripping, textile materials bleaching, It is also used in bleaching for paper pulps, Kaolin, leather, bamboo wares, foodstuffs and beverages. In Chemical industry, it is used in the line of photograghics, chemical processing, cleaners, Water Treatment, gas purification, and environmental improvement.

Sodium Hydrosulfite,Sodium Hydrosulfite 88%, Sodium Hydrosulfite 90%

Yucheng Jinhe Industrial Co.,Ltd , https://www.jinhetec.com

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If video is stuck and the picture is delayed during wireless video surveillance, this is undoubtedly the most unacceptable. With the development of modernization, the requirements for wireless surveillance are high-definition, real-time, and smooth. We know that because the wireless monitoring system involves several aspects of wireless monitoring equipment, real-time completion is not possible, but if it is well controlled, the delay can be reduced to almost the same as real-time, invisible to the naked eye. Here we talk about how to minimize the delay.

1. Impact on the performance of the wireless video monitoring device: Due to the insufficient CPU processing capability or system response speed of the device responsible for transmission, a delay occurs in the transmission process.

If we want to transmit 1080P/60 frames of high-definition video data over a broadband-limited network without delay, we must first adopt a chip dedicated to video processing, and then, through innovation and reform of the internal architecture and application algorithms of the transmission equipment. Improve the compression ratio of video encoding so that the video data will not be excessively delayed during transmission, and generally can be kept below 40ms.

2, on the impact of decoder performance: the so-called decoder generally refers to the decoder itself or the client for decoding, if the client's host configuration. The quality of the decoder can easily affect the video decoding speed. If the quality is not good, video delay or card screening may occur. However, what needs to be explained here is that in the course of decoding or encoding, the system automatically adds buffering to maintain the fluency of the video, which is also prone to slight delays.

An expensive codec may not be good, and a cheap codec may not be bad. When selecting a codec, it is not a matter of the price, but whether the standard is appropriate or not. It is better to choose a high quality and match. Codec, this is more conducive to the transmission of video data and reduce the delay phenomenon.

3, on the performance of the transmission line: As we all know, a good network cable and a bad network cable, naturally, a good cable transmission efficiency is higher, but prone to delays and other adverse effects is a bad cable, so choose High-quality transmission equipment is an important measure to reduce delays; in the wired transmission, it is naturally a network cable, and in wireless transmission, high-quality wireless transmission equipment must be selected.

4, on the transmission process of relay equipment jump effect: In the transmission process, each jump once, it means to increase the processing time of a transit device, so the more the number of jumps, the greater the time loss caused. Therefore, reducing the number of jumps in designing the transmission route can effectively reduce the delay.

5, on the performance of the switch: When the network traffic becomes larger, the switch and the router's processing time will accordingly longer, and the poor quality of the switch's delay, packet loss rate, backplane bandwidth, switching capacity, packet forwarding Rates and other factors will also be directly reflected in the network transmission process, so controlling network traffic and selecting quality switches are also effective means to reduce the delay.

The time delay of Shenzhen Leian Technology's wireless monitoring equipment is very small, and within a few milliseconds, it is close to real-time.

Isolation Gown

All isolation gowns are made of high quality spun-bonded polypropylene gowns offer protection ideal for a variety of settings. Each gown features elastic cuffs with waist and neck tie closures. Impervious, fluid resistant gowns feature a polyethylene coating. Not made with natural rubber latex. The safety clothing is convenient to wear and take off, and meets the wearing needs of dairy protection.

Isolation Gown,Hospital Isolation Gowns,Reusable Isolation Gowns,Disposable Isolation Gowns

Shandong Shengquan New Materials Co., Ltd. , https://www.sqnewmaterials.com

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Many customers have to consider the installation plan because of the workshop transformation. For the steel structure workshops, many old workshops need to be reconstructed. It is necessary to consider the installation scheme of the trolley sliding lines. Regardless of the special situation, the trolley wire is overhead, instead of trench. With respect to the installation of overhead trolley lines, safety is a primary consideration.

First, traffic safety trolley line installation 1, the entire workshop renovation, demolition of old equipment, before the demolition of old equipment, must ensure that the power of each way is cut off, so as not to endanger the power supply, dismantle the safety of personnel, the general dismantling process, first Remove the old slide wire according to the reverse order of the previous installation. Take the slide line first, and then lift the rack, the bracket, the joint jacket, the power input, etc. After that, remove the angle bracket under the rail pressure plate. The removal is basically completed.

2, safety slide installation:

a. According to the situation of the trolley line, this article takes the DHH-200A-L trolley line as an example. After the trolley line has been purchased, it is installed according to the manufacturer's instructions. The angle bracket is welded or fixed to the rail under the 1.25-meter distance.

b. After fixing the angle bracket, install the lifting rack and fixing bracket under the angle bracket.

c. Afterwards, fix the trolley wire under the lifting rack and the fixing frame, and install the power input, the aluminum connector of each sliding wire connection point, and then install the joint jacket and end cap.

d. When the current collector is installed, the current collector bracket is welded to the standard position of the vehicle, and the current collector penetrates into the current collector bracket, and the parallel distance between the current collector and the trolley line is adjusted.

3, slip line debugging. After the equipments are installed, prepare the slide wire for debugging. Use special equipment to keep the angle brackets parallel and the sliding lines do not bend. After that, the power test runs.

4. The installation of the trolley slide wire is inconvenient. If you encounter running and debugging operation, the collector sparks, you need to check the guide rail connector, and properly brush the brush, and ensure 60% contact area.

2. A method for installing a trolley slide wire in a factory building and a step for installing a trolley wire bracket, the method comprising the following steps:

1. According to the installation height of the trolley wire, make a “Z” shaped trolley wire bracket mounting mold;

2. Mount the trolley wire mounting bracket on the driving track on the driving track platform;

3. Use the adjusting screw of the mounting mold to adjust the mold, and observe the straightness of the mounting mold through the level meter to make it level and fix it;

4. The construction personnel in the cage placed the trolley wire bracket on the lower horizontal end of the mounting mold and welded firmly; the alignment of the trolley wire was performed on the track platform using the trolley wire alignment detector. After installing the trolley wire, determine whether the trolley wire meets the standard.

This article on the installation program of the trolley line, if your company wants to transform the workshop or the demand line, you can consult me ​​at any time, I will provide you with a detailed workshop renovation program.

Jewelry Box

Need a countertop jewelry organizer that makes the most of a small space? We have dozens to choose from. Looking for the perfect ring tray, earring organizer, necklace organizer or jewelry box organizer? Find jewelry boxes and jewelry organization ideas for everyday and special designs that make thoughtful gifts. Our selection even includes travel jewelry cases and jewelry pouches that make packing a breeze, as well as jewelry cleaners and polishing cloths for professional-quality jewelry care.

Jewelry Box,Jewelry Gift Boxes,White Jewelry Box,Women Jewelry Boxes

Shenyang Meitu Artical Printing Co.,Ltd , https://www.meituprinting.com

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                    China machine supplier dixin c type purlin machine

1. Technique parameters of the processing line

C purline machine fly saw cutting Main Parameter
1. Install size: 13500mm*2200mm*1500mm
2. Rollers: 13rows
3. Rolling material: Gcr 15
4. Main motor power: 11 KW
5. Hydraulic unit power: 3 KW ( the motor for fly saw)
6. Pressure of the hydraulic unit: 15Mpa
7. Productivity: 0-10 m/min
8. Punching material: Cr12
9. Electric control system: PLC vector inverter
10. Raw material thickness: 1.5-3.0mm
11. Forming standard: 80-300
12. Shaped rib (optional)
C purline machine fly saw cutting Main Machine


2. Processing technique and deployment

Processes: Man-made un-coiler- Straightening---Roll forming machine- PLC system- Hydraulic cutting --Receiving table

3. Summary of the structure

(1). Common un-coiler







Functional and structural characteristics: It is used to support the steel coil and uncoil it in a turnable way. The steel coil is uncoiled by hand. The un-coiler can bear 3t. It is suitable to process the coiled steel with the inside diameter.
(2). Feeding the material into the platform

Functional and structural characteristics: Put the raw material(steel srip) on the plat to manufacture and process, it can guarantee that the products are neat, parallel and everything is uniformity. Please refer to the equipment regulation to know the function of locate angle iron.

(3). Molding core

Functional and structural characteristics: In order to keep the product shape and precision, adopts welded sheet structure, motor reducer drive, chain transmission, roller surfaces polishing, hard chrome plating, heat treatment. The polished surface and the heat treatment towards the molds also can keep the molding plate surface smooth and not easy to be marked when it is being stamped.

Rolling chrome thickness: 0.01 mm

Rolling material: Forging Steel 45#

Material of the mold: Cr40. And the mold is heat-treated.

(4). Shearing mechanism

It adopts the hydraulic drive and automatic location to decide the dimension and cut the target products.

Match equipment: It contains one set of cutting tools, one hydraulic tank and Mold.

(5). Hydraulic system

It is controlled by gear wheel oil pump. After filling the hydraulic oil into the hydraulic oil tank, the pump drive the cutter machine to begin the cutting job.

Match equipment: The system includes a set of hydraulic tank, a set of hydraulic oil pump, two hydraulic pipes. And two sets of electromagnetism valves.

Power of the oil pump: 11.5kw

Hydraulic oil: 40#

If you are interested in the roll forming machine,welcome to contact me directly:

                           

Screw & Barrel For Extruder Machine

Screw & Barrel For Extruder Machine,Extruder Machine,Extruder Machine Barrel,Screw And Barrel For Extruder Machine

ZHOUSHAN HONGTUO COMPANY , https://www.hongtuoscrew.com

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ELLE brand from France, headquartered in the beautiful Paris. After more than half a century's efforts, ELLE from France has become a well-known fashion brand. The ELLE brand offers modern women a variety of simple but elegant fashion options from ready-to-wear, underwear and accessories to household items, ELLE products have been integrated into all aspects of life, covering 46 countries and over 3,000 cities worldwide.

A woman's underwear is a rose in full bloom, warm with a woman's own dream, to enhance the taste and mood.

Underwear as a woman's second layer of skin, a variety of fashion charm, ***y sultry underwear has become the most intimate modern woman's lover. Apparel designers boldly play the whimsy, the most close to the woman's skin to create a fine and unique objects, so that women readjust their perspectives, to find and examine their hidden beauty.

Shoulder bag

Promotional Shoulder Bag,  Nonwoven Postman Bag, Shoulder Shopping Bag

Cangnan Aite Bag Ltd. , http://www.cnpolyesterbag.com

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The difference between unipolar, bipolar, and tripolar switches is that this is a generic problem. It can also be called a single-link, double-link, triple-switch or an open, double-open, or triple-open switch. The button switch, double switch is the two buttons, and so on.

1. The so-called "bit", also known as "link", means that on a panel, there are several switch function modules. "One" means that there is a switch, and "two bits" means that there are two switches that can control two electrical devices separately.

2. The so-called "control", that is, a switch selectively controls several circuits. For example, a dual-control switch, the letters a, b represent the circuit, that is, the process of the switch is to turn on a disconnect b, or turn b off a process. The two lines will not be turned on at the same time, nor will they be disconnected at the same time. In the home, two dual-control switches can be used to control the function of an electric appliance in two places through a certain rule of a certain line, and this function is more widely used in lighting of living rooms and bedrooms.

Explosion-proof duplex and bipolar are two different meanings.

What is the explosion-proof dual-control dual-control switch?

Explosion-proof double switch has three contacts, such as 1, 2, 3, set 1 as a common point, then there are two states: 1-2 pass 1-3 break or 1-2 cut 1-3 pass. Triple switch has four contacts, such as 1, 2, 3, 4, set 1 as a common point, then there are three states: 1-2 pass other break, 1-3 break other break, 1-4 pass other break. Multipole analogy. Like selector switches and the like. The general lighting switch does not have a triple switch.

Explosion-proof two-pole switch is two sets of contacts, there are four contacts, such as 1,2,3,4, there are two states: 1-2 pass and 3-4 pass and 1-2 break and 3-4 break. Three-pole switch has six contacts, such as 1,2,3,4,5,6, there are only two states: 1-2 pass and 3-4 pass 5-6 also pass, the other state is 1- 2 broken and 3-4 broken 5-6 also broken. Multipole analogy. Like circuit breakers, they are called unipolar, bipolar, and tripolar. Can not say two triple.

Instrumentation Tube

Instrumentation Tube,Instrumentation Pipe,Stainless Steel Tube for Instrumentation

Hongsheng Steel Pipe Co., Ltd , http://www.qdsteelpipe.com

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According to the working principle of the industrial online ph meter, the electronic path between the working electrode and the reference electrode of the ph controller sensor is performed through the measured medium. The contamination of the working electrode glass film directly affects the measurement, especially in the sewage. When processing plants are used, cleaning is very important. This article mainly introduces several aspects that should be noted in the daily maintenance of the industrial online ph meter and gives you a reference.

According to the working principle of the industrial online ph meter, the electronic path between the working electrode and the reference electrode of the ph controller sensor is performed through the measured medium. The contamination of the working electrode glass film directly affects the measurement, especially in the sewage. When processing plants are used, cleaning is very important. Therefore, the daily maintenance of industrial online ph meter should pay attention:

1. Clean the debris around the industrial online ph-meter probe protection tube every day so that the liquid contacted by the ph probe is the measured medium.

2. For the pH electrode equipped with a self-cleaning device, perform manual cleaning of the ph electrode once a month. When cleaning, wipe the glass electrode with dilute hydrochloric acid or clean water with a soft brush, so that the surface of the ph electrode is completely removed.

Industrial online ph meter, online ph meter, acid meter, ph meter, industrial ph meter, ph at Qingdao, shang tai ph meter, mettle toledo ph electrode, etc. supplied by the غير مجاز مي باشد Qingdao office 3. Special attention should be paid However, when the probe is cleaned, if it is not installed immediately, the ph electrode must be temporarily placed in water, and it must not be left empty to avoid probe failure.

4. If the industrial online ph meter electrode does not dry for a long time, there is a phenomenon of dehydration failure, you can try to immerse the industrial online ph meter electrode in the pH4.0 buffer for 24h, then remove and check whether the detection function is restored. . If it still does not work, you can only replace the new electrode.

5. Regularly check the industrial online ph meter (usually three months).

6. In addition to regular cleaning of the probe and periodic calibration, the online ph controller should be regularly compared with a pH test paper. In particular, when the color of the incoming water is observed with the naked eye, and the ph controller shows no change, the test paper is used for comparison, or the sample is taken to the laboratory for comparison. Once the difference between the measurement result and the test result of the dipstick is too large, the sensor needs to be re-cleaned and verified.

7. Industrial online ph meter electrode preservation: The most important point is to prevent the electrode from dehydration, so do not take off the factory protective cap on the electrode before using the industrial online ph meter electrode. Store the ph electrode in a cool place during storage and avoid direct sunlight. Store in the winter to avoid freezing to avoid freezing the electrodes.

Bio-polishing

Bio-polishing,bio-polishing enzyme,textile auxilliary agent

Sunson Industry Group Co., Ltd , https://www.sunsonchinaenzymes.com

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Beauty Island underwear is cheap, stylish, comfortable, the quality of the endorsement, the company pursued the perfect combination of low prices and high quality, refused to low-غير مجاز مي باشدt low-quality speculative management, business objectives and purpose is to establish a unified, orderly, stable and healthy development National chain store, and plans in 3-5 years, "join the beauty island, join hands in creating a win-win" principle, in the country to develop direct sales stores, franchise stores and franchising chain of more than 1000, to achieve leapfrog development Expected goals.

Looking to the future, the Beauty Island underwear will continue to "parity, fashion, comfort, quality," the concept of continuous introduction of new products and continuously enhance the core competitiveness of the brand, for Chinese women to bring more both high-end quality and taste of elegant parity of health Underwear, so that more fashion beauty beauty women to share beauty Island life.

Beauty Island 19 yuan fashion underwear concept store, is the flagship 19 yuan fashion underwear and other high-end home products hot chain model. With more than 1,000 models 19 yuan fashion boutique underwear, is the history of the most styles, the lowest price, the largest national underwear chain brand.

3 IN 1 USB HUB

3 In 1 Usb Hub,Usb C Hub Vga,Type C Hub 3 In 1,USB HUBs with HDMI,docking station USB C.

Shenzhen Konchang Electronic Technology Co.,Ltd , https://www.konchang.com

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People with experience in LED display industry will find such an interesting phenomenon. Previously, LED display screens mostly used white LED packaging devices (white light), especially in the field of outdoor LED display. However, in recent years, in addition to white, black LED packaging devices (black lights) have increasingly appeared in the market, especially in the field of small-pitch LED display and stage background screen. What are the factors that make the light turn black from white? Why does the small-pitch LED display favor the black light?

What does the "white" white light mean? - High brightness suitable for long distance viewing

To understand the black light LED display, we must first understand the concept of white light. The LED is assembled from a plastic bracket and a chip. Because the brightness of the early chips was not high, engineers used a white bowl shaped plastic bracket to enhance the focus of reflection to ensure that the chips with low brightness achieved brighter results. However, the white light also has its drawbacks. When it comes to black and gray, his light-emitting diode color (white) also participates in the color to be expressed on the electronic display. This causes color distortion (no expression of black, gray, dark green, etc.). ). Engineers compensate for the lack of brightness of the wafers by losing color expression.

In the past, LED displays were mostly used in outdoor commercial advertising displays. Because of the long viewing distance, they have higher requirements for display brightness and can accept the loss of color to compensate for the brightness. However, nowadays, when the LED light emission brightness is getting larger and the high-density and small-pitch LED display screen is becoming mature, the LED lamp beads do not need to be white to achieve satisfactory results. At the same time, in order to meet people's requirements for image fidelity and improve the contrast ratio of LED display screens, CREE and NICHIA of foreign LED display packaging factories have first developed a black light, and domestic LED display packaging plants Lanke Electronics will use a black light technology. To achieve the ultimate, we have developed a black light that provides the darkest grade in the market.

Comparison of white light (left) and black light (right)
Black light "black" mean -? High-contrast color display richer

performance results for the LED display, it means higher fidelity performance of the display, the better, but realistic The degree of good or bad is mainly determined by the two indicators of the contrast and color of the expressed image (the greater the contrast, the better, the more types of colors are better). Contrast refers to the measurement of the different brightness levels between the lightest and darkest blacks in the light and dark areas of an image. The larger the difference is, the greater the contrast is. The smaller the difference is, the smaller the contrast is and the higher the contrast is. Display vivid, rich colors, can support various colors.

For example, the brightness of one LED display is 500 cd/m2 in a full white screen state, and the brightness of a full black screen is 0.5 cd/m2, so the contrast of the screen is 1000:1. The current use of LED display devices from Lanke Electronics can increase the contrast by 40%.

The effect of contrast on visual effects is critical. Generally speaking, the greater the contrast, the clearer and more eye-catching the image, the brighter the colors, and the less contrast, which will make the entire screen gray (as shown above). High contrast is very helpful for image clarity, detail performance, and grayscale performance. In some black and white contrast text display, video display, high contrast LED display in black and white contrast, clarity, integrity and other aspects have advantages. Contrast has more influence on the dynamic video display effect. Because the light and shade conversion in the dynamic image is faster, the higher the contrast, the easier the human eye can distinguish the conversion process.

As a result, the entire display surface of a display screen made of black light exhibits an image that is excellently uniform, vibrant, and darker in color.

What does "black" in black light mean? - Non-reflective colors are more realistic

In addition to the high contrast brought about by the black light, it also brings with it an even better performance. It is not reflective. Because the PPA holder in the black LED lamp is black, because the black is non-reflective, that is, there is no reflective ability, the light is converted into other energy (such as heat energy) on the black object, so even when there is stray light At the time, the black PPA holder will absorb all of them, no longer reflect the stray light, thereby reducing the interference of stray light, so that the color is more realistic, there will be no cross-colored, trailing and each color mutual interference The phenomenon makes the color more pure, clear and more realistic.

Especially the LED stage background screen, due to the large number of projection lights in the stage environment, light and shadow staggered, will seriously affect the LED stage background screen display. In addition to the black light itself does not reflect light, Lanke electrons also through the surface atomization technology, so that the light diffuse reflection, making the use of black crystal LED display in the reflective light of the stage environment can still be clearly seen on the display image. Due to the above characteristics of the black crystal LED lamp beads, light from the various light sources on the stage can be prevented from interfering with each other, thereby increasing the black screen effect of the LED display and being unaffected by the brightness of the external environment, and the LED display made of black light. The screen can always keep the brightness level of the display color clear.

Every product has its own era. Under the demand of small pitch and high definition, the field of LED display is undoubtedly an era of black light.

Fence Type

Pvc Coated Welded Mesh Fence,Security Wire Fence,Powder Coated Welded Fence,Welded Mesh Fence

Vibrating Screen ,Fence Type Co., Ltd. , http://www.nbweldedmesh.com

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Elegance, fashion, comfort and health are the dreams of every woman's heart. Dreamer's poems help them to realize this dream with keen fashion sense, perfect design and high-grade materials. It is proficient in underwear material, style, functional aspects of thoughtfulness, not only in love with women can reflect the noble and confident temperament, but also love the subtleties of women's physical and mental health care. Urban women lead the pursuit of fashion in the colorful life of their own beauty, to achieve the taste of life.

Dili Dream Poem focuses on product design and R & D with strategic eyesight. It spends a lot of money setting up "Product Design Center" and attracts many professional designers who have rich experience in the industry, professional technology and keen fashion trend, Equipped with the French lectra computer design system, with independent, professional product design capabilities and research capabilities.

Visغير مجاز مي باشدe And Visغير مجاز مي باشدe Mixed

Visغير مجاز مي باشدe And Visغير مجاز مي باشدe Mixed,Visغير مجاز مي باشدe Polyester Doulbe Lawyer Fabric,Cool Feeling Visغير مجاز مي باشدe Rayon Spandex,Rayon Spandex Fabric

Shaoxing Sinofashion Textiles Co.,Ltd. , https://www.shownaturetex.com

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