Our aluminum gas cylinder, can be used in many fields, including beverage cola CO2 machine, beer drinking machine, diving club, Inflatable lifejackets, lifebuoys, lifejackets aviation, medical oxygen machine, fire extinguishers, emergency vehicle inflatable, car airbags, escape respirators, home emergency respirators, health care, sampling, aquarium & welding CO2 machine, industrial & specialty gas filling, compressed air filling, paintball game, air guns, etc.