Synthetic Isoprene-Butadiene Rubber (SIBR) from Germany
BR copolymerized with small isoprene for tire treads, in granular primary form. Classifies under HTS 4002.20.00.00 if predominantly butadiene rubber meeting BR criteria.
Duty Rate — Germany → United States
10%
Rate breakdown
9903.05.3910%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.97, articles the product of a member state of the European Union, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 10 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Monomer ratio analysis required to confirm BR dominance over ISR classification
• Vulcanization compliance testing essential for copolymer synthetic rubber status