Supplier: Disposable protective face mask/ kn95, non medical use,jx001,ffp2 nr,158*108mm,white color,4 lays(pp non woven fabrics,pe/pet hot air cotton,ptfe filter member,pp non woven fabrics),particle filtration efficiency more than 99%,ethylene oxide sterilization,the product has obtained eu ce certificate and has been on the white list.