Material:Polyester (PET), polypropylene (PP), Fiberglass, METAMAX, FMS, P84, Acrylic, PTFE Membrane etc ... . Nonwoven Needle Felt Filter Cloth forDust filter bagsMaterial: Polyester (PET), polypropylene (PP), Fiberglass, METAMAX, FMS, P84, Acrylic, PTFE Membrane etc ... pp, anti-static, water and oil repellent, PET membrane, Acrylic. High temperature products: FMS, Nomex, PPS, PTFE, fiberglass, p84 fiber. ...