Protective mask (type B)The protective mask is an industrial protective mask for industrial protection of eyes and face from harmful substances such as dust, chemicals, hot gases, poisonous gas, and debris. It is installed on the left and right sides of the elastic head clamp. A large curved thin curved transparent cover is mounted on the toothed knob. A large curved thin curved transparent cover can be placed on the face or top of the head on the elastic head clip with the toothed knob. It can be used with anti-virus masks, dust masks and work caps for comprehensive protection.

　　Protective masks are divided according to different occasions: welding masks, safety masks, medical protective masks, gas masks, radiation masks