3 Ply Surgical Mask = One Ply of Melt Blown + 2 Ply Spun Bond Fabric. 3 Ply Non Surgical Masks =3 Ply of Spun Bond Fabric We Also Supply Two Layer Cotton Reusable / Washable Printed Mask 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.