... 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 ... in making various healthcare and medical supplies. Quality consistent with the ISO9001, ISO13485, CE standards and China State ... in one 20 or 40 container for you.Let's begin the win-win cooperation! 3-ply face mask with filter ...