1.Dust filter bag material: POLYESTER, PPS, NOMEX, PE, FIBERGLASS, PP, ARYLIC ... of surface finish, PTFE coating 1.The material of the dust filter bag: POLYESTER, PPS, NOMEX, PE, FIBERGLASS, PP, ARYLIC. 2 ... bag.We can meet the different requirment of media and type! dust filter bag