HS 3903 — Polymers of styrene, in primary forms
HS heading 3903 (Polymers of styrene, in primary forms) spans 5 products in U.S. import records, with 108,616 bill-of-lading shipments. The most imported are Acrylonitrile-butadiene-styrene (ABS) copolymers, Polystyrene, expandable, and Styrene-acrylonitrile (SAN) copolymers.
Part of Chapter 39: Plastics and articles thereof
Sourced from U.S. Customs bill of lading data · Updated monthly · Data through August 2026Cite as: ImportDoor, U.S. Customs bill of lading data (data through August 2026), https://www.importdoor.com/products/heading/3903
Products under this heading
| HS | Product | Shipments |
|---|---|---|
| 390330 | Acrylonitrile-butadiene-styrene (ABS) copolymers | 69,799 |
| 390311 | Polystyrene, expandable | 17,029 |
| 390320 | Styrene-acrylonitrile (SAN) copolymers | 12,631 |
| 390390 | Polymers of styrene, in primary forms, other | 6,900 |
| 390319 | Polystyrene, other | 2,257 |
Frequently asked questions about HS 3903
What is HS code 3903?
HS 3903 covers polymers of styrene, in primary forms. It is a 4-digit heading in chapter 39 (Plastics and articles thereof) of the Harmonized System, with 5 six-digit subheadings that appear in U.S. import records.
How many U.S. import shipments fall under HS 3903?
ImportDoor has 108,616 U.S. Customs bill-of-lading shipment records under HS heading 3903, updated monthly.
What is the most imported product under HS 3903?
Acrylonitrile-butadiene-styrene copolymers (HS 390330) leads with 69,799 shipments, followed by Polystyrene, expandable (HS 390311) and Styrene-acrylonitrile copolymers (HS 390320).