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High-Tg Bismaleimide Resin Flakes from Mexico

Flake-form bismaleimide-triazine copolymer per exact chemical specification of HTS 3911.90.35.00, in primary form for composite prepreg production. Offers Tg >250°C for demanding telecom applications. Aromatic monomer content exceeds 95% threshold per subheading note.

Duty Rate — Mexico → United States

10%

Rate breakdown

9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico

Import Tips

Document flake form qualifies as 'primary forms' not plates/sheets

Verify no fiber reinforcement present

Watch for reclassification as 3911.90.55 if minor formulation changes