... a 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, O2, CH4, SF6, N2O, N2 and mixture gas ... bar/200 barQF-2Replacement gas and protection gas for chemical industry, metallurgy , and electric industry99.999%150 ...