Unsaturated Polyester Resin (Non-specific) Flakes from Mexico
UPR flakes for composites beyond standard aromatic types, with maleic anhydride and diols. 3907.99.50 as other polyesters not fitting 3907.99.10 criteria.
Duty Rate — Mexico → United States
16.5%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Distinguish from 3907.99.10 via acid type certificate; styrene-free declaration if applicable; acid value testing required