Face mask, 1 international standard:EN149:2001,FFP1,FFP2,CE,N95 2 material without any toxic,irritating. 3 special 3-ply Face mask,1 ... international standard:EN149:2001,FFP1,FFP2,CE,N952 material without any toxic,irritating ... textile,disintegration,carving,heavy metal pollution,glass...etc workshops. Face mask