... ISO 4)protecting against dust,bacteria n95 particulate face mask Materials of n95 particulate face mask:1st layer: 25g pp non ... layer: 220g needle punched cloth Advantages of n95 particulate face mask:Conforms to international standard:EN149:2001 FFP1 ... maintenance, hygienic, clean, environment friendly.Applications of n95 particulate face mask:Chemurgical, Spray-paint/printing, Dyeing, Garage, Mining ...