Activated carbon compound mask with breathe valve

It's used for protection from tiny dust praticle, and is suitable for the work under varied special environment.

1)Layer:4-ply

2)Packing: 20pcs/box, 400pcs/carton
3) Non-woven material +filter paper+activated carbon+non-woven
4) Tie on and ear loop
5) Fiberglass-free
6) Latex free elastic bands
7) Soft and non-irritating 
8)High filtration and easy to breath
9) Nose bar adaptable, water-proof

10) For medical factory, electronics factory and food hygiene profession use

11) The design for the valve is suitable for long wear in the wet and hot environment