| 2512.00.00 | 00 | Siliceous fossil meals (for example, kieselguhr, tripolite and diatomite) and similar siliceous earths, whether or not calcined, of an apparent specific gravity of 1 or less | t | Free | | Free |
| 2515 | | Marble, travertine and other calcareous monumental or building stone of an apparent specific gravity of 2.5 or more, and alabaster, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape: | | | | |
| 3901.10 | | Polyethylene having a specific gravity of less than 0.94: | | | | |
| 3901.20 | | Polyethylene having a specific gravity of 0.94 or more: | | | | |
Harmonized Tariff Schedule of the United States inquiry: 3203Ã
