... , CO2, CO, SF6, N2, O2, C3H8, CH4, CF4, N2O etc. High Purity Gas Our company has a full range of gas products ... gas, standard gas, mixture gas and liquefied gas, such as high purity He, Ar, H2, CO2, CO, C3H8, O2, CH4, SF6, N2O ... -term business relationship with your good company ! Product Chemical formula Purity Filling pressure Valve ApplicationOxygenO299.9%150 bar/200 barQF-2Steel ...