① N95 standard is one of nine protection level which edited and certificated by NIOSH(National Institute for Occupational Safety and Health) for particulate respirators. ② Only the respirators/mask meet N95 standard and certified by NIOSH can be called NIOSH N95 mask. ③ "N"means used for against particulate aerosols free of oil. ④ "95"means it filters at least 95% of the particles at aparticle size of 0.3 micron.
NIOSH approved N95 mask with/out valve
Cup shaped without valve
3 layes: Non woven fabric+Melt Blown Filter+Non woven fabric
Farm buildings, Mining , Weaving, Polishing, Pharmacy, Hardware, working with fiberglass, cement,etc.