Do you really know the structure of KN95 mask? _ Fiber
Original title: Do you really understand the structure of KN95 mask? Do you really know the structure of KN95 mask? Medical masks and protective masks are non-woven materials,Quickly Delivery Disposable Protective Clothing, composed of directional or random fibers, generally multi-layer structure,3 Ply Disposable Protective Face Mask, usually referred to as SMS structure (2 layers of S layer...
0 Comments 0 Shares