... filter cartridge 1) Filter material: Polypropylene 2) High procision 3) Long serveice life 4)double open end Melt blown PP filter ... to water purification, but also used to filter strong acid, lye and organic solvent because ... , such as air filter, water filter, oil filter, carbon filter, acid filter, oil purifier, filter bag, bag filter, filter cartridge , filter equipments etc.Reason 4Shanghai ...