Filter adsorption device is a type of collection installed in ships, protective engineering, and vehicles Body protective equipment is used to filter and purify toxins, biological warfare agents, radioactive dust, etc. from the outside air, and then send them into a closed space for personnel to breathe. At the same time, it is Overpressure is formed inside the system to prevent the infiltration of contaminated air. The product is mainly used for easy toxicity Places where gas or chemical raw materials leak or evaporate, such as chemical plants, laboratories, hazardous chemical warehouses Places such as warehouses, military facilities, emergency shelters, underground positions, civil defense engineering, etc.