High Purity Gas He, H2, Ar, CO2, CO, SF6, N2, O2, C3H8, CH4, CF4, N2O etc. High Purity GasOur company has ... 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, ... bar/200 barNitrogenN299.9%150 bar/200 barQF-2Replacement gas and protection gas for chemical industry, metallurgy , and electric industry99.999% ...