... PTFE membrane laminated on various reliablefabric materials. The filter efficiency can be as high as 99.9~99 ... cannot compare with.Applications:1) Mineral: cement, gypsum, lime, carbon black, asbestos, limestone, phosphate, alkali2) Chemicals: acids, alkalis, ... : asphalt plant, aster, incinerator, metallurgy,cement, lime, carbon black, liquid boiler, coal fire boiler Dust collector filter bag dust ...