| Tariff Classification |
| section 18 | Optical, photographic, cinematographic, measuring, checking, precision, medical or surgical instruments and apparatus; clocks and watches; musical instruments; parts and accessories thereof |
| chapter 91 | Clocks and watches and parts thereof |
| 91.12 | Clock cases and cases of a similar type for other goods of this Chapter, and parts thereof: |
| 9112.20 | －Cases |
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