Polystyrene Resin GPPS 525 from Japan
General purpose polystyrene (GPPS) 525 is a high-impact transparent resin made from styrene monomer exceeding 95% by weight, used in packaging and consumer goods. It falls under HTS 3903.90.5000 as 'Other' polymers of styrene in primary forms, not specifically named elsewhere in the series. This classification follows subheading note (a)(1) for polymers where the styrene monomer unit predominates.
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
• Provide detailed monomer composition certificates to verify >95% styrene content per subheading note (a)(1) for proper classification
• Ensure SDS and technical data sheets specify 'primary form' (pellets/resin) to avoid misclassification as finished articles under Chapter 39 headings like 3923