... -carbon can protect against dust,mist,paint,acid-gas,organic-gas,Hg vapor,ammonia,sulfureted hydrogen,et TPR frame ... dust,mist,paint,acid-gas,organic-gas,Hg vapor,ammonia,sulfureted hydrogen,etc.3.CE approval gas mask chemical respirator Verified Information ... 4.0 Acceptable Production Flow: 1.Injecting 2.Cutting 3.Assembling 4.Packing Certification: Certified Picture Certification Name Certified ...