Analysis
Subheading 6907.21 covers of a water absorption coefficient by weight not exceeding 0.5%, within heading 6907. 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.
None of its 5 lines is duty-free at the general rate. Rates run from 8.5% to 10% with a median of 10%, so the line you choose sets the duty.
The US splits it as follows: 6907.21.10 for of a water absorption coefficient by weight not exceeding 0.5%… (10%), 6907.21.20 for having not over 3229 tiles per square meter, most of which have faces… (10%), 6907.21.30 for the largest surface area of which is less than 38.7 cm2 (10%), 6907.21.40 for other: other (8.5%) and 6907.21.90 for glazed: other (8.5%).
By Census's concordance, most of its statistical lines are made by Clay Building Material and Refractories Manufacturing (327120). Those are the NAICS industries a US producer of these goods would report under.
Tariff lines
| Line | Description | General rate |
|---|---|---|
| 6907.21.10 | Of a water absorption coefficient by weight not exceeding 0.5%: unglazed | 10% |
| 6907.21.20 | Having not over 3229 tiles per square meter, most of which have faces bounded entirely by straight lines | 10% |
| 6907.21.30 | The largest surface area of which is less than 38.7 cm2 | 10% |
| 6907.21.40 | Other: other | 8.5% |
| 6907.21.90 | Glazed: other | 8.5% |