In general, it is made of gauze or gauze, which is used to filter the air and other harmful substances.
The mask has a certain filtering effect on the air entering the lungs. When respiratory infectious diseases are prevalent and when working in the dust polluted environment, wearing the mask has a very good effect.
Masks can be divided into air filtering masks and air supply masks.
Parameters
Plane masks are divided into: cotton mask, non-woven mask, polymer material mask, activated carbon powder filter mask, activated carbon fiber felt pad mask.
Size: 18 × 9 (adult), 15 × 9 (child).