Gas mask

Gas mask is a kind of personal protective equipment for special labor and for individual soldiers. It is worn on the head to protect the respiratory organs, eyes and face of people and prevent the injury of toxic substances such as gas, dust, bacteria, toxic and harmful gas or steam. Gas masks are widely used in the fields of petroleum, chemical industry, mining, metallurgy, military, fire fighting, emergency rescue and relief, health and epidemic prevention, science and technology, environmental protection, machinery manufacturing, etc., as well as in the cities with severe haze and photochemical smog, which can also play an important role in personal respiratory system protection. Gas masks can be divided into full mask and half mask in terms of modeling, and full mask can be divided into positive pressure type and negative pressure type.