Oct 29, 2021 · USA ptfe membrane filter 0.22 um for power generation-Voa PTFE Membrane(USA) The membrane is made of PTFE material. With unique features of fibril-nod, smooth surface, resistance to organic solutions, breathability and waterproof, flame retardant, resistance to high-temperature and strong acids/alkalis, and non-toxicity, this kind of membrane can be used for atmosphere dust