... polyester, nomex, pps or conductive fiber added Specifications:Type: filter bagFiltration level: G3,G4,F5,F6,F7,F8Temperature:consecutive temperature ... Filter contains electrostatic fibers, Especially good dust filtration efficiency, High dust holding capacity and high permeability, High life Applications:Environmental ventilation ... , paint shop, school, computer room, etc. needle-punched filter bag