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.3 special 3-ply design,high filtration and static electricity material to resist normal toxic and tiny micro particle4 Suited to mining,building,grinding drugs,casting, ...