... filter bags, embedded bag, varicose bag, centrifuge filter bags, dust bag , fine workmanship, skilled, practical units are welcome to come to negotiate!Nonwoven needle punched Filter bag:1 ... )Materials: Polyester, Nylon, PP, PE, PTFE, Nomex, Fiberglass, etc.2)Technics: Nonwoven Needle Punched3)Gram Weight ...