3-ply nonwoven face masks BFE>99.5% Color:green Function:effectively prevent from bacterial and dust Certificate:CE,ISO9001, 3-ply nonwoven face masks Size:9.2(18)×18cmMaterial:22g/m2 pp nonwovens+24g/m2 melting-blow pp nonwovens+25g/m2 calendaring pp nonwovenPacking:50pcs.box,20box/carton,40box/cartonFunction:3-ply structure,effectively prevent from bacterial and dust,two plastic strip ...