... or more 3 ply face mask with valve and N95 standardMaterial: nonwoven fabric Nontoxic, odorless, sensitivity and non-irritating to skin High filtration ... control.A) Vic mask use polypropylene as the main materials,without any toxic,irritating,stimulant or poison,and glass fiber free.B ... to many countries,such as America,Europe,Japan and so on. 3 ply N95 nonwoven fabric face mask respirator with valve