该产品是新一代大容量正压氧气呼吸器，人体呼吸与外界，可以防止外界有毒有害气体吸 入。可广泛适用于矿山、化工等行业在发生有毒有害气体及缺氧时，进行抢险和帮助遇险人员逃生时使用

The product is a new generation of large capacity of positive pressure oxygen respirator. Human respiratory isolation, can prevent toxic gas inhalation. When the mining, chemical and other industries in the event of poisonous gas or hypoxia, for rescue or help people in danger to escape using