Hydroxyl-Terminated Polyisoprene (HTPI) from China
HTPI is a telechelic natural rubber derivative with hydroxyl end-groups, used as a reactive prepolymer in polyurethane elastomers and adhesives. Supplied as viscous liquid or solid in drums. HTS 3913.90.1000 covers this chemically modified natural rubber in primary form.
Duty Rate — China → United States
37.5%
Rate breakdown
9903.88.0225%Except as provided in headings 9903.88.12, 9903.88.17, 9903.88.20, 9903.88.54, 9903.88.59, 9903.88.61, 9903.88.63, 9903.88.66, 9903.88.67, 9903.88.68, 9903.88.69, or 9903.88.70, articles the product of China, as provided for in U.S. note 20(c) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(d)
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
Import Tips
• Include end-group analysis (OH content) and molecular weight data to prove chemical modification status
• Declare exact polyisoprene content (>95%) to meet polymer naming rules in subheading note (a)(1)
• Prevent reclassification to 3909 by ensuring not presented as polyurethane prepolymer solution