... 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 ... .9%150 bar/200 barQF-2Steel cutting, welding, flame processing99.999%150 bar/200 barNitrogenN299.9%150 bar/ ... 200 barQF-2Replacement gas and protection gas for chemical industry, metallurgy , and electric industry99 ...