Atactic Polystyrene Granules from Mexico
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 — Mexico → United States
16.5%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
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