HTSUS, United States
3903.11.00.00
Polymers of styrene, in primary forms / Polystyrene / Expandable
Classification path
- Polymers of styrene, in primary forms
- Polystyrene
- Expandable
Rates of duty
- General (MFN)
- 6.5%
- Column 2Cuba, North Korea, Russia, Belarus
- 15.4¢/kg + 46%
- Unit of quantity
- kg
Trade agreement rates
FreeGSP (lapsed since Dec 31, 2020), U.S.-Australia FTA, U.S.-Bahrain FTA, U.S.-Chile FTA, U.S.-Colombia TPA, AGOA (authorized through Dec 31, 2026), E, U.S.-Israel FTA, U.S.-Jordan FTA, U.S.-Korea FTA, U.S.-Morocco FTA, U.S.-Oman FTA, CAFTA-DR, U.S.-Panama TPA, U.S.-Peru TPA, USMCA, U.S.-Singapore FTA
Related lines in heading 3903
- 3903.19.00.00Polymers of styrene, in primary forms / Polystyrene / Other6.5%
- 3903.20.00.00Styrene-acrylonitrile (SAN) copolymers6.5%
- 3903.30.00.00Acrylonitrile-butadiene-styrene (ABS) copolymers6.5%
- 3903.90.10.00Methyl methacrylate-butadiene-styrene (MBS) copolymers6.5%
- 3903.90.50.00Polymers of styrene, in primary forms / Other6.5%
About heading 3903
Polymers of styrene, in primary forms
Heading 3903 covers polymers of styrene in primary forms. It is split by polymer type: polystyrene, SAN, ABS, MBS, and other. Polystyrene is further split into expandable and other.
Full guide to heading 3903Products in this heading
- Expandable polystyrene beads for foam production
- Polystyrene granules for injection molding
- Styrene-acrylonitrile copolymer pellets
- ABS resin pellets
- MBS copolymer pellets
- General styrene polymer resin in primary form
Frequently asked questions
What is the HTS code for expandable polystyrene resin?
Expandable polystyrene is classified under 3903.11.00.00, with a general (MFN) rate of 6.5%.
What is the duty on ABS copolymers?
ABS copolymers are classified under 3903.30.00.00, with a general (MFN) rate of 6.5%.
How do I classify SAN copolymers?
SAN copolymers are classified under 3903.20.00.00, with a general (MFN) rate of 6.5%.
Source: USITC Harmonized Tariff Schedule, retrieved October 21, 2026.