Face mask DM0401 A-22F Meeting the international quality criteria (Europe); EN149; 2001; CE0121. Made with three-ply nonpoisonous, non-allergic, non-stimulating material.The breather volve makes your breath easy by reducing heat accumulation. The built-in silica gel dustproof flake ensures a sound sealing. Adjust the bandage strip and the built-in bandage foam cushion to adapt to various face-shapes with comfortable sealing. The high-efficient and strong electrostatic filtering materials effectively filter the solid particle dust, and prevent the oil liquid gas. It is applicable in such places as construction, mining, textile, grinding medicine, disintegration projects, cement, agriculture and animal husbandry, cutting dust, pollutes from heavy metal.