... gases,for example, industrial oxygen, industrial nitrogen, industrial argon,industrial hydrogen, industrial helium,carbon dioxide etc.As one of the biggest gas ... hexafluoride, methane,ethane, propane, silane,germane, ethylene oxide, ethylene, propylene, helium,argon,nitrous oxide, carbon dioxide,fluoromethane,difluoromethane,trifluoromethane, welding gas, special ...