... 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 ... barNitrogenN299.9%150 bar/200 barQF-2Replacement gas and protection gas for chemical industry, metallurgy , and ...