Environmental Protective Filtration Materials are used for separation of gas and solid, depuration of smoke and callback of micro-materials. They can be widely used in the fields of iron steel, cement, chemical industry, smelting, founding and road construction industry. Depending on the working condition and actual need, there are High Temperature Filtration Materials which are used from 200 ?~300?, Normal Temperature Filtration Materials which are used from 100 ?~160?, and Coated, Water-proof and Oil-proof, Antistatic and other Functional Filtration Materials.