Analysis
Subheading 9001.90 covers other, within heading 9001. 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 5 US tariff lines below it are national.
Every one of its 5 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: 9001.90.40 for other: lenses (duty-free), 9001.90.50 for other: prisms (duty-free), 9001.90.60 for other: mirrors (duty-free), 9001.90.80 for halftone screens designed for use in engraving or photographic… (duty-free) and 9001.90.90 for other: other (duty-free).
By Census's concordance, most of its statistical lines are made by Commercial and Service Industry Machinery Manufacturing (33331). Those are the NAICS industries a US producer of these goods would report under.
Goods only reach 9001.90 once they fall within heading 9001 (optical fibers and optical fiber bundles; optical fiber cables other than those of…). 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 |
|---|---|---|
| 9001.90.40 | Other: lenses | Free |
| 9001.90.50 | Other: prisms | Free |
| 9001.90.60 | Other: mirrors | Free |
| 9001.90.80 | Halftone screens designed for use in engraving or photographic processes | Free |
| 9001.90.90 | Other: other | Free |