| 6901.00.00 | 00 | Bricks, blocks, tiles and other ceramic goods of siliceous fossil meals (for example, kieselguhr, tripolite or diatomite) or of similar siliceous earths | t | Free | | 30% |
| 6902 | | Refractory bricks, blocks, tiles and similar refractory ceramic constructional goods, other than those of siliceous fossil meals or similar siliceous earths: | | | | |
| 6902.10 | | Containing by weight, singly or together, more than 50 percent of the elements magnesium, calcium or chromium, expressed as MgO, CaO or Cr2O3: | | | | |
| 6902.10.10 | 00 | Magnesite bricks | thousand t | Free | | 13% |
| 6902.10.50 | 00 | Other | t | Free | | 30% |
| 6902.20 | | Containing by weight more than 50 percent of alumina (Al2O3), of silica (SiO2) or of a mixture or compound of these products: | | | | |
| 6902.20.10 | | Bricks | | Free | | 25% |
| 6902.20.10 | 10 | Alumina | thousand t | | | |
| 6902.20.10 | 20 | Other | thousand t | | | |
| 6902.20.50 | | Other | | Free | | 30% |
| 6902.20.50 | 10 | Alumina | t | | | |
| 6902.20.50 | 20 | Other | t | | | |
| 6902.90 | | Other: | | | | |
| 6902.90.10 | | Bricks | | Free | | 25% |
| 6902.90.10 | 10 | Clay | thousand t | | | |
| 6902.90.10 | 20 | Other | thousand t | | | |
| 6902.90.50 | | Other | | Free | | 30% |
| 6902.90.50 | 10 | Clay | t | | | |
| 6902.90.50 | 20 | Other | t | | | |
| 6903 | | Other refractory ceramic goods (for example, retorts, crucibles, muffles, nozzles, plugs, supports, cupels, tubes, pipes, sheaths and rods), other than those of siliceous fossil meals or of similar siliceous earths: | | | | |
| 6903.10.00 | 00 | Containing by weight more than 50 percent of graphite or other carbon or of a mixture of these products | kg | Free | | 45% |
| 6903.20.00 | 00 | Containing by weight more than 50 percent of alumina (Al2O3) or of a mixture or compound of alumina and of silica (SiO2) | kg | Free | | 30% |
| 6903.90.00 | | Other | | Free | | 30% |
| 6903.90.00 | 10 | Of clay | kg | | | |
| 6903.90.00 | 50 | Other | kg | | | |
Harmonized Tariff Schedule of the United States inquiry: 3203Ã
