Styrene Expanded Polystyrene Foam Sheets from Japan
Rigid foam sheets made from expanded polystyrene (EPS), a cellular polymer of styrene, used for insulation and packaging. Classified under HTS 3921.11.00.00 as cellular plates and sheets of styrene polymers per chapter notes on polymer classification. The cellular structure provides buoyancy and thermal insulation properties.
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%
Import Tips
• Verify polymer composition meets 95% styrene monomer requirement via lab testing; obtain certificates of analysis
• Ensure dimensions comply if claiming special rates under heading notes
• Watch for misclassification as non-cellular film under 3920