Alibaba ptfe 0.22 micron filter for chemicals-Voa Vial PTFE 0.2 micron air filter, View industrial air filters, Tanvi PTFE 0.2 micron air filter, US $ 1.5 - 10 / Piece, Manufacturing Plant, Food & Beverage Factory, Video technical support, None.Source from Hangzhou Tanvi Filtering Equipment Co., Ltd. on Alibaba.com. Hydrophobic PTFE Micropore