3-ply face mask with filter 1,produced in the purification area. 2,CE ISO Approved 3,BEF90%~99% 3-ply face mask with filter1, 17.5 ... *9.5cm,2, 3-ply, nonwoven face mask or with the isolation layer ... (melt-blown fabric) .3, we produce in the purification area.4, CE ...