EPTFE membrane manufacturer / supplier in China, offering Vent Bottle Cap Seal Chemical Industry Breathable Cap D17 IP 68 Packaging Vents Plastic Plug Plug Vent Plastic, Portable Electronics Vents-Immersion Waterproof Sound-Permeable Film, Oil Cooled Powertrain Ventilation Valve for Automotive Transmission Plug Structure for Gas and Water Media and so on.