Thermoplastic Natural Rubber (TPNR) from Japan
TPNR dynamically vulcanizes natural rubber within thermoplastic matrix, creating processable pellets for injection molding. Primary pellet form. Blends chemically cross-linked qualify as modified natural polymer under 3913.90.1000.
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
• Composition breakdown must show natural rubber phase >50% with documented vulcanization
• Microscopy evidence of co-continuous morphology prevents synthetic polymer misclassification
• Specify pellet size <5mm to confirm primary form vs. finished shapes