Actived Carbon Respirator,Face Mask, Dust Mask, Masks 1.Maintenance free 2.Latex-free synthetic rubber ... head strap. Actived Carbon Respirator,Face Mask, Dust Mask, Masks Features1. Conforms to international standards: EN149: 2001 ... static electricity material to resist normal toxic and ting micron particle. 4. Suited to mining, building, grinding drugs, casting, agriculture, ...