Gas equipment：exhaust processor, gas purifier, gas storage tank, vaporizer, vaccuum pump, gas cabinet damp proof.
Spare parts：gas pressure, gas valves, gas path joint gasket and gas pipeline engineering design, construction.
Special gas:silane, ammonia, nitrogen oxide, hydrogen chloride, hydrogen bromide, hydrogen selenide, boron trichloride, sulfur hexafluoride, methane tetrafluoro, ethane hexafluoride, perfluoropropane, nitrogen trifluoride, phosphorus trifluoride, silicon tetrafluoride, phosphorus pentafluoride, dichlorosilane, germane.
Mixed gas: mixture of hydrogen and nitrogen, mixture of rare gases, mixture of rare gases and oxygen, mixture of rare gases and nitrogen, mixture of carbon dioxide and oxygen, mixture of carbon dioxide and ethylene oxide, mixture of carbon monoxide and hydrogen.
Liquid gas：liquid nitrogen, liquid oxygen, liquid argon, liquid ammonia, liquid hydrogen, liquid helium.