... with multi-layered nonpoisonous, non-allergic, non-stimulating materials.3. Adjust the bandage strip and the built-in bandage foam ... construction, mining, textile, grinding medicine, disintegration projects, agriculture and animal husbandry, cutting dust, pollutes from heavy metal.face mask, flat ... mask, 2 ply mask, 3 ply mask, N95 mask, FFP1 Mask, FFP2 maskDisposable mask, ...