| Description |
HS CODE |
| Other clays (not including expanded clays of heading No 6806), andalusite, kyanite and sillimanite, whether or not calcined; mullite; chamotte or dinas earths... | 2508 |
| Natural magnesium carbonate (magnesite); fused magnesia; dead-burned (sintered) magnesia, whether or not containing small quantities of other oxides added before sintering; other magnesium oxide, whether or not pure... | 2519 |
| Alkali or alkaline-earth metals; rare-earth metals, scandium and yttrium, whether or not intermixed or interalloyed; mercury... | 2805 |
| Compounds, inorganic or organic, of rare-earth metals, of yttrium or of scandium or of mixtures of these metals... | 2846 |
| Refractory bricks, blocks, tiles and similar refractory ceramic constructional goods, other than those of siliceous fossil meals or similar siliceous earths... | 6902 |
