... ROYALROAD respirator 1>Economical and easy to use this half-mask, air-purifying respirator is maintenance free and protects against ... 3>PP headband,very easy to wear and release 4>activated carbon filter only be need routinely replaced (sold separately). 5 ... can be protected:Organic steam,ether,benzene,gas,acetone,carbon disulfide Applications: chemical industry,fire-fighting,spray painting,emergency ...