1.Dust filter bag material: POLYESTER, PPS, NOMEX, PE, FIBERGLASS, PP, ... of surface finish, PTFE coating 1.The material of the dust filter bag: POLYESTER, PPS, NOMEX, PE, FIBERGLASS, PP, ARYLIC. ... unit that produces duster bags specially and can process bags f different shapes to the users requirement including round, trapezoidal, ... can meet the different requirment of media and type! dust filter bag