BT Resin for Multilayer PCB Laminates from China
Pelletized bismaleimide copolymer resin specifically matching the named chemical structure in HTS 3911.90.35.00, supplied in primary form for laminate production. Its high Tg (glass transition) makes it ideal for advanced semiconductor packaging. Classification follows subheading note (a)(1) for polymers with 95%+ named monomer content.
Duty Rate — China → United States
35%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
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)
Import Tips
• Include FTIR spectra or GPC analysis verifying molecular structure matches named copolymer
• Ensure packaging prevents moisture absorption critical for thermosets
• Pitfall: classifying finished laminates here instead of 3921.13.00