Shuang Jie Beijing Seoul special high-tech Co., Ltd. uses advanced technology and equipment 100% polyester non-woven with thick high-strength composite laminated PTFE porous membrane is made with blocking viruses, antibacterial, anti-static, anti- blood infiltration, waterproof, breathable, wind resistance, warmth, and many other features, and has a comfortable and lightweight. 
 Polytetrafluoroethylene (PTFE) is a high performance polymers, PTFE film thickness of about 20-30 microns, with 9 billion per square meter microporous. Each pore is about 0.2-5 microns in diameter, larger than the diameter of water vapor molecules (0.003-0.004 micron), less than the minimum diameter of water droplets (20-100 microns), coupled with the lower surface of PTFE tension, therefore, PTFE membrane with high water pressure resistance properties, its ability to hydrostatic pressure than 30Kpa, also has good water vapor permeability of porous, permeable capacity 5000g / or more, to smooth the row of sweat steam. PTFE membranes can also block harmful particles, anti-micro particles rate of 90% or more by that virus and bacteria can not pass, but water vapor can pass, comfortable, and can be reused. The strength of its excellent stability, biological compatibility, thermal stability, easy to shape. 

 Shuang Jie Beijing high-tech Co., Ltd. Seoul 
 Wang Xingfu 
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