... :Disposable face mask Usage: Hospital,clean room,beauty parlor,food factory Size:17. ... .5x9cm, 12x9cm Color: white/blue/green/pink face mask | face mask | face mask | face mask | face mask Features:Bacterial and dust Filtration rate exceed 95 ... the ISO13485 standards, CE certificated Material:1st layer:20gsm PP nonwoven,2nd layer: 20gsm fulter paper,BFE> 95&99%,3rd layer ...