KN95 Mask Product Structure(with Breathing Valve )

Main features:

- adjustable nose clip, adjust the fitting of mask to face to ensure good tightness;

- cold flow breathing valve,When inhaling tightly close to prevent dust contamination,when exhaling to open to expel carbon dioxide;

- non-woven fabric layer is made of soft, high-density non-woven fabric to highly efficient filter dust in the air

- elastic band tensioning mask for good sealing