1.compound metal mesh with non-woven fabric 2.high filter effciency 3,stronger and reuse 4.ISO manufacturer ZF compound non-woven fabric mesh for primary filterPERFORMANCE:- Nontoxic, odorless, white and light, clear crease.- Even distribution, high strength, low resistance and high efficiency,- Anti-acid-base, ant-corrosion, high melting point, stable performance,- Water-proof, relatively high ...