Analysis
Subheading 9031.80 covers other instruments, appliances and machines, within heading 9031. The first six digits are shared by every country that uses the Harmonized System, so this part of the code is the same in the US, UK and EU schedules; the 2 US tariff lines below it are national.
Every one of its 2 tariff lines is duty-free at the general rate, so classification within the subheading affects statistics and Chapter 99 measures rather than the base duty.
The US splits it as follows: 9031.80.40 for electron beam microscopes fitted with equipment specifically designed… (duty-free) and 9031.80.80 for other instruments, appliances and machines: other (duty-free).
By Census's concordance, most of its statistical lines are made by Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals (334515) and Analytical Laboratory Instrument Manufacturing (334516). Those are the NAICS industries a US producer of these goods would report under.
Goods only reach 9031.80 once they fall within heading 9031 (measuring or checking instruments, appliances and machines, not specified or included…). Under General Rule 6, subheadings are then compared only with others at the same level, so a product is matched against its siblings, not against lines elsewhere in the chapter.
Tariff lines
| Line | Description | General rate |
|---|---|---|
| 9031.80.40 | Electron beam microscopes fitted with equipment specifically designed for the handling and transport of semiconductor wafers or reticles | Free |
| 9031.80.80 | Other instruments, appliances and machines: other | Free |