... : Cartridge FilterMedium Material: FiberglassFunction: Air FilterSurface treatment: Smooth treatment, waterproof...Application: Cement, Metallurgy, Power Station,...Air Permeability: 6m3/m2minPayment term: L ... material, comppund with advanced folded technology, which makes the air filter with large filter area, small hole diameter, ... performance. recycle liquid gas filter element for air treatment