This oxygen flow meter also called oxygen inhalator (buoy type). It is used a lot in the medical center, scientific research institutions, industrial and mining area, or on oxygen-deficient patients at home. You just need to connect it to an oxygen cylinder to adjust the flow of oxygen output for usage. As an indispensable device for oxygen therapy in emergency rooms and wards of hospitals, it has precise flow and is easy to use and safe. The medical pressure reducer is designed to reduce the pain of users. The product has accurate output, stable quality, high quality and safe performance, which will make you safer, more assured and more satisfied during use.