7 in 1 Gas Mask Acid Organic Full Face Mask Respirator Paint Chemical Pesticide Laboratory Dust Mask Matched with Filters PM022. PC Anti-Fog Mask High light transmission PC column surface screen, impact re- sistance, scratch resistance, double layer anti-fog, clear and broad vision, suitable for use in various environments. Five-Point Fixed Headband Wear Fast Good Air Tightness, Ensure Mask Close to the Face Is Not Easy to Produce Sliding and Gap, Wear Non-Oppressive. Food Grade Silicone Mouth and nose mask High Quality Silica Gel kou bi zhao, and Baby Nipple Material Same, Comfortable and Durable Anti-Aging. Standard Interface Mounting and Dismounting More Convenient, Optional Multiple lv du he, Filter Cotton Use. A variety of filter boxes are suitable for various environments. 6001 Protection : Organic gases and vapors, such as benzene and its homolog, gasoline, acetone, carbon dioxide, ether, etc. 3# canister Protection : Organic gas and vapor benzene and its homologs, chlorine gas, alcohol, benzene ammonia, carbon dioxide, acetone, carbon monoxide, potassium c-hloride, methyl chloride, methyl chloride, chloropicrin, potassium chloride, ethylene chloride, cyclohexane, vinyl chloride, phenol, etc. 4# canister Protection : Alkaline gases such as ammonia and its derivatives 7# canister Protection : Sulfur dioxide, hydrogen sulfide, sunlight, nitrogen oxide, phosphorus and phosphorus-containing organic pesticide, sulfur oxide, hydrogen chloride HCL. Full mask + No. 3 canister seven-piece set. Package: 1Main body +2 pieces of 3# canister +2 pieces of filter cotton +2 pieces of filter box cover. 4 canister seven-piece set. Package: 1Main body +2 pieces of 4# canister +2 pieces of filter cotton +2 pieces of filter box cover. 7 canister seven-piece set. Package: 1Main body +2 pieces of 7# canister +2 pieces of filter cotton +2 pieces of filter box cover. Full mask + 6001 canister seven-piece set. Package: 1Main body +2 pieces of 6001 canister +2 pieces of filter cotton +2 pieces of filter box cover.