Use: This product belongs to job respiratory protection equipment is mainly used to protect against inhalation of harmful gases, dust, smoke and other pollutants, and effectively crediting anoxia harm of. Chemical, petrochemical, pharmaceutical, industrial, gas, urban construction, underground construction industry, operating environment in the maintenance of the tower tank, underground construction, as the workers' respiratory protection. 
 Protection: dust, heavy smoke, mist, gas, poisonous vapors, as well as those invisible tiny substances classification: according to the type of blower can be divided into ordinary electric air long tube respirator with battery powered air long respirator long tube and the explosion-proof electric air respirator; the number of users can be divided into one type, two-type, three, four, four more than type. Can be divided into a different hood hood hood type, mask type.