1.quality assured 2.anti-aging allergy free 3.approved for organic vapors ,acid gasses 4.widely used in chemical industry chemical respirator 1) soft durable rubber facepiece 2) comfortable to wear , easy breathing ,not irritate skin 3) chemical cartridge is approved for organic vapors and acid gasses 4) protect worker' s breathing oragans and facial 5) widely used in chemical industry , fire ...