Analysis
HTS 3915.20.00 covers of polymers of styrene under heading 3915 (waste, parings and scrap, of plastics).
The normal trade relations rate here is zero, shared by about 13% of the 236 tariff lines in chapter 39, a useful check when a neighbouring dutiable line is a candidate. Chapter 99 measures such as Section 301 or 232 can still apply on top, depending on where the goods come from.
The other lines in the same group are 3915.10.00 (of polymers of ethylene, duty-free), 3915.30.00 (of polymers of vinyl chloride, duty-free) and 3915.90.00 (waste, parings and scrap, of plastics: of other plastics, duty-free).
Goods from countries without normal trade relations pay the column 2 rate of 10% instead of nothing, so origin decides between free entry and a 10% duty.
All 3 neighbouring lines carry the same duty-free rate, so a borderline choice between them changes the statistics reported, not the duty paid.
Every edition we compared, from Jan 2023 to Oct 2026 (Rev. 22), shows the same general rate of Free.
Neighbouring lines
| Line | Description | General rate |
|---|---|---|
| 3915.10.00 | Of polymers of ethylene | Free |
| 3915.30.00 | Of polymers of vinyl chloride | Free |
| 3915.90.00 | Waste, parings and scrap, of plastics: of other plastics | Free |