We Are Exporter of 5 Ply N 95 Mask , 3 Ply Surgical / Non Surgical Masks 2 Ply Cotton Reusable / Washable Masks. N 95 Class I = (2 Ply of Melt Blown + 2 Ply of Spun Bond + One Ply of Hot Air Cotton) N 95 Class Ii = (One Ply of Melt Blown + 3 Ply of Spun Bond + One Ply of Hot Air Cotton) Our Masks Are Fda, en 149:2001 Certified. Melt Blown Fabric Used in Our Mask Is Sitra Certified. Test Report Indicates That Bacterial Filteration Efficency in Our Mask Is 96.5% Company Is C.e., I.s.o. ,f.d.a. , W.h.o. Gmp Certified.