... to use Cheap effect the dust 95% can used with another equipment SPECIFICATIONSGas Mask-1:single-tank gas mask,it ... be replaced-3:Applicable to organic gases and organic vapors, benzene and its homologue, gasoline, acetone, carbon disulfide, ether, etc., - ... any face shape5.Deep chin cup for comfortable6. Can used with another equipemt to fit different using environments PICTURES:CERTIFICATES: custom ...