17.5*9.5cm Size and Disposable 3 Ply Non-Woven Medical Face Mask Tianchang Anderson Co., Ltd. Base Info Material:Non-Woven+Meltblown Layer+Non-WovenCustomized Packing:AcceptShelf Life:2yearsFunction:Anti-DustTransport Package:50 Pieces Per Pack,Box, 40 Boxes Per CartonSpecification:17.5cm*9.5cm Description Pre:Non-Woven Fabric 3 Ply Disposable Respirator Protective Protection Dust Face Mask Disposable Protective Mask Next:Bfe 99 98 95% Stock Dustproof Antivirus Antifog Three Layers Disposable Face Mask