KN95 Disposable Face Mask N95 Respirator GB2626-2006 Face Mask Type KN95 MaskMaterial/Fabric
1st ply: 50g/m2 spun-bond PP
2nd ply: 25g/m2 Hot Air Cotton
3rd ply: 25g/m2 melt-blown PP (filter)
4rd ply: 25g/m2 melt-blown PP (filter)
5rd ply: 30g/m2 non-woven fabricFeature
High PFE, Adjustable nose piece, Elastic earloopColorWhiteStandard
GB2626-2006Weight
6.5g-7g/pc
This PDF handy chart from 3M company explains the difference between N95 and KN95 masks
https://multimedia.3m.com/mws/media/1791500O/comparison-ffp2-kn95-n95-filtering-facepiece-respirator-classes-tb.pdf