Analysis
HTS 5503.90.10 covers other: of vinyon under heading 5503 (synthetic staple fibers, not carded, combed or otherwise processed for spinning).
Rates on the nearby lines range from duty-free to 4.3%. The costliest confusion would be with 5503.90.90 (other: other) at 4.3%, a difference of 4.3 points on the customs value.
There is no general-rate duty on this line, which puts it with roughly 7% of the 133 tariff lines in chapter 55 that are also free. Free here means free of the base duty only: origin-specific Chapter 99 duties such as Section 301 can still be owed.
Goods from countries without normal trade relations pay the column 2 rate of 25% instead of nothing, so origin decides between free entry and a 25% duty.
Census statistics map these goods to NAICS 325220 (Artificial and Synthetic Fibers and Filaments Manufacturing), an industry of 129 US establishments employing 13,925 people, the industry a domestic producer of these goods reports under.
The general rate of Free has not changed in any edition of the schedule since Jan 2023.
Neighbouring lines
| Line | Description | General rate |
|---|---|---|
| 5503.11.00 | Of nylon or other polyamides: of aramids | 4.3% |
| 5503.19.10 | Containing 10 percent or more by weight of nylon 12 | Free |
| 5503.19.90 | Other: other | 4.3% |
| 5503.20.00 | Synthetic staple fibers, not carded, combed or otherwise processed for spinning: of polyesters | 4.3% |
| 5503.30.00 | Acrylic or modacrylic | 4.3% |
| 5503.40.00 | Synthetic staple fibers, not carded, combed or otherwise processed for spinning: of polypropylene | 4.3% |
| 5503.90.90 | Other: other | 4.3% |