| 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 90 | Optical, photographic, cinematographic, measuring, checking, precision, medical or surgical instruments and apparatus; parts and accessories thereof |
| 90.12 | Microscopes other than optical microscopes; diffraction apparatus: |
| 9012.10 | －Microscopes other than optical microscopes; diffraction apparatus: |
| －－Scanning electron microscopes and transmission electron microscopes, including scanning transmission electron microscopes; scanning probe microscopes |
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