All HS codes
| 28041000 (0) | Hydrogen |
| 28041000 (0) | Hydrogen |
| 28042100 (0) | Argon |
| 28042100 (0) | Argon |
| 28042900 (0) | Rare gases (excl. argon) |
| 28042900 (0) | Rare gases (excl. argon) |
| 28043000 (0) | Nitrogen |
| 28043000 (0) | Nitrogen |
| 28044000 (0) | Oxygen |
| 28044000 (0) | Oxygen |
| 28045000 (0) | Boron; tellurium |
| 28046100 (0) | Silicon containing >= 99,99% by weight of silicon |
| 28046900 (0) | Silicon containing < 99,99% by weight of silicon |
| 28047000 (0) | Phosphorus |
| 28048000 (0) | Arsenic |
