butane gas cartridge refill machine 1.Suitable for filling all kinds of gas 2.Capacity :1200-2400cans/h 3.Lifetime service butane gas cartridge refill machine this machine is suitable for filling all kinds of gas in the can ,such as LPG ,butane gas ,N2 .CO2,O2.compressed air .....capacity :1000 cans/h butane gas cartridge refill machine