KN95 Face Mask GB2626-2006 Standard 5-Layer High Bacterial Filtration Box of 50 Nan Qi Xing • Standard: GB2626-2006 • Material: 50gsm PP nonwoven, 25gsm melt blown filter, 50gsm hot air cotton, 25gsm melt blown filter, 50gsm PP nonwoven Product Features: • Type: Ear loop • Layers: 5 • Color: White • Disposable, single-use, breathable, light, and environment-friendly • High elasticity ear loop help fit different users and dual point at