| 20110 | Acetylene (manufacture) |
| 20110 | Argon (manufacture) |
| 20110 | Carbon dioxide (manufacture) |
| 20110 | Compressed industrial gases (manufacture) |
| 20110 | Elemental gases (manufacture) |
| 20110 | Hydrogen (manufacture) |
| 20110 | Industrial gases (manufacture) |
| 20110 | Inert gases such as carbon dioxide (manufacture) |
| 20110 | Isolating gases (manufacture) |
| 20110 | Liquefied or compressed industrial gases (manufacture) |
| 20110 | Liquefied or compressed industrial or medical refrigerant gases (manufacture) |
| 20110 | Liquefied or compressed medical gases (manufacture) |
| 20110 | Liquid or compressed air (manufacture) |
| 20110 | Mixed industrial gases (manufacture) |
| 20110 | Neon (manufacture) |
| 20110 | Nitrogen (manufacture) |
| 20110 | Nitrous oxide (manufacture) |
| 20110 | Oxygen (manufacture) |
| 20110 | Rare gases (manufacture) |
| 20110 | Refrigerant gases (manufacture) |
| 20110 | |