... full range of gas products, including industrial gas, electronic gas, standard gas, mixture gas and liquefied gas, such as high purity He, Ar, H2, CO2, CO, C3H8 ... bar/200 barNitrogenN299.9%150 bar/200 barQF-2Replacement gas and protection gas for chemical industry, metallurgy , and electric industry99.999%150 bar ...