Syndiotactic Polystyrene Pellets (SPS) from Japan
Syndiotactic Polystyrene (SPS) features crystalline structure from stereospecific polymerization, classified in primary pellet form under HTS 3903.19.00.00 as other polystyrene. Used in high-heat engineering applications like automotive parts.
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
• Submit polymerization process details confirming stereoregularity without comonomers
• High glass transition temp (100°C+) helps distinguish from general GPPS
• Avoid declaring as 'specialty polymer' without COA, risking 3904 classification