and industry concentration needs to be improved

waterproof and moisture-permeable membrane refers to a new type of polymer waterproofing made of thermoplastic polyurethane elastomer (tpu), acrylic resin, polyvinyl chloride (pvc), polytetrafluoroethylene (ptfe), rubber, etc., and introduced hydrophilic groups. material. waterproof and breathable membranes have the advantages of aging resistance, wear resistance, good toughness, high strength, water resistance, and good elasticity. they are widely used in electronic products, clothing, sporting goods, medical supplies, building…