3903.19.00.00/Atactic Polystyrene Granules/Japan

Atactic Polystyrene Granules from Japan

Atactic Polystyrene is an amorphous, non-crystalline polystyrene variant in granule form, falling under HTS 3903.19.00.00 as other polystyrene in primary forms. It serves as a blend modifier for improving clarity and impact in other plastics.

Duty Rate — Japan → United States

12.5%

Rate breakdown

9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%

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Import Tips

• Provide FTIR or NMR analysis proving atactic structure and 95%+ styrene content

• Declare exact melt flow index to assist CBP in verifying primary form status