... C6H6,CL2 SO2 1.Purpose and CharacteristicMF25 half face piece gas mask is apply to the workers, ... alcohols, CS2, CCL4, CHCL3, CH3Br, nitro paraffin, paint and its derivatives and so on. The product’s components ... are the body of half face mask, the cartridge, exhale valve, rubber headbands. ... should be kept straight, stayed close to the face , warped the mouth and nose, and the ...