The HX345 series is a high-quality breathing air filling pump designed for continuous operation. HX345 has reliable performance, simple operation and convenient maintenance. It is widely used in firefighting, lifesaving and diving breathing. It can provide high-quality breathing air that meets the international breathing air standard "EN 12021" all year round. The breathing gas meets GB/T 31975-2015 "Technical Requirements for Compressed Air for Respiratory Protection".