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
9903.03.0110%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
Import Tips
• Distinguish from 3907.99.10 via acid type certificate; styrene-free declaration if applicable; acid value testing required