| 2508.10.00 | - Bentonite | |
| 2508.30.00 | - Fire-clay | |
| 2508.40.00 | - Other clays | |
| 2508.50.00 | - Andalusite, kyanite and sillimanite | |
| 2508.60.00 | - Mullite | |
| 2508.70.00 | - Chamotte or dinas earths |
| 2508.10.00 | - Bentonite | |
| 2508.30.00 | - Fire-clay | |
| 2508.40.00 | - Other clays | |
| 2508.50.00 | - Andalusite, kyanite and sillimanite | |
| 2508.60.00 | - Mullite | |
| 2508.70.00 | - Chamotte or dinas earths |