... PTFE Coated Polyester Needle Felt can nearly retain all the particles in the ... cannot compare with. Applications: 1) Mineral: cement, gypsum, lime, carbon black, asbestos, limestone, phosphate, alkali2) Chemicals: acids, alkalis, fertilizer ... applications: asphalt plant, aster, incinerator, metallurgy,cement, lime, carbon black, liquid boiler, coal fire boilerPTFE Filter Bag,Filter Bag ...