Natural Hydrophobic PTFE air vent filters Cartridge for Air/Gas, US $ 0.99 - 68 / Piece, New, Hotels, Garment Shops, Building Material Shops, Manufacturing Plant, Machinery Repair Shops, Food & Beverage Factory, Farms, Restaurant, Home Use, Retail, Food Shop, Printing Shops, Construction works , Energy & Mining, Food & Beverage Shops, Advertising Company, Online support.Source from Guangzhou Lvyuan Water Purification Equipment Co., Ltd. on Alibaba.com.