| Tariff Classification |
| section 16 | Machinery and mechanical appliances; electrical equipment; parts thereof; sound recorders and reproducers, television image and sound recorders and reproducers, and parts and accessories of such articles |
| chapter 84 | Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof |
| 84.21 | Centrifuges, including centrifugal dryers; filtering or purifying machinery and apparatus, for liquids or gases: |
| －Filtering or purifying machinery and apparatus for gases: |
| 8421.39 | －－Other |
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