Respirator,Face Mask, Dust Mask,Protective Mask 1.Maintenance free 2.Latex-free synthetic ... rubber head strap. Respirator,Face Mask, Dust Mask,Protective Mask Features1. Conforms to international standards: EN149: 2001 FFP1 ... ting micron particle. 4. Suited to mining, building, grinding drugs, casting, agriculture, farming, electronic, food processing, cement textile, disintegration, carving ...