they are mainly used in precision chemical ,dye chemical ,sugar ,pharmaceutical ,aluminum industry specification 1. Acid and alkali resistance 2. Long service life 3.Matrial:Polyester 100% staple filter fabric 5.Thickness:2mm 6.Weight: 245gsm 7.Air Permeability:480L/m2/s Detail about the products They can be widely in pharmaceutical ,non-ferry melting ,chemical industrial ,for tell equipments of ...