| Tariff Classification |
| section 13 | Articles of stone, plaster, cement, asbestos, mica or similar materials; ceramic products; glass and glassware |
| chapter 69 | Ceramic products |
| 69.09 | Ceramic wares for laboratory, chemical or other technical uses; ceramic troughs, tubs and similar receptacles of a kind used in agriculture; ceramic pots, jars and similar articles of a kind used for the conveyance or packing of goods: |
| －Ceramic wares for laboratory, chemical or other technical uses: |
| 6909.12 | －－Articles having a hardness equivalent to 9 or more on the Mohs scale |
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