Polyisobutylene Tire Inner Liner Resin from China
High molecular weight polyisobutylene resin used in butyl rubber compounding for tire inner liners, qualifying for HTS 3902.20.5000 as 'Other' polyisobutylene in primary pellet form. Provides air retention properties when copolymerized during tire manufacturing.
Duty Rate — China → United States
44%
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
• Specify Mooney viscosity for classification verification; ensure compatibility certificates for butyl blending; avoid pre-mixed compounds classifying as 4002