What does 3903 cover?

Polymers of styrene, in primary forms:. This is a heading-level category with several subordinate codes — open one to see its full duty breakdown.

Where does this data come from?

Codes and MFN base rates come from the full USITC HTS 2026 Rev.11 export. Section 301/232/122 surcharge mappings are approximated pending code-level review. Every rate carries a source_url and effective_from, so you can trace it back to the controlling notice.

3903 — Polymers of styrene, in primary forms:

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3903 · Polymers of styrene, in primary forms:

This is a category heading rather than a rate line — pick one of the codes below to see its full duty stack.

Subordinate codes (5)

Code	Description
3903.11.00.00	Expandable
3903.19.00.00	Other
3903.20.00.00	Styrene-acrylonitrile (SAN) copolymers
3903.30.00.00	Acrylonitrile-butadiene-styrene (ABS) copolymers
3903.90	Other:

Frequently asked

What does 3903 cover?: Polymers of styrene, in primary forms:. This is a heading-level category with several subordinate codes — open one to see its full duty breakdown.
Where does this data come from?: Codes and MFN base rates come from the full USITC HTS 2026 Rev.11 export. Section 301/232/122 surcharge mappings are approximated pending code-level review. Every rate carries a source_url and effective_from, so you can trace it back to the controlling notice.