Product Overview: Product name KN95 Specification 15.5*10.5cm Standard GB2626-2006 material 4 plys Inner layer:Nonwoven fabrics Second layer:hot air cotton Third layer:melt blown nonwoven fabric Outer layer:nonwoven fabrics use This is product is used for personal protection,filtration of particles and their attachments in the air,it can also be worn in common medical environment. Period of validity Two years

Technical parameters: