Allyl Diglycol Carbonate Resin Flakes from Mexico
CR-39 monomer resin (allyl diglycol carbonate) in flake primary form for optical lens casting. HTS 3907.91.4000 covers this unsaturated allyl polyester 'other' resin with >95% named monomer units. Essential for scratch-resistant eyewear lenses.
Duty Rate — Mexico → United States
15.8%
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
• Provide refractive index and Abbe number specs to confirm CR-39 identity
• Ensure flakes are pure resin without curing agents added
• Pitfall: misdeclaration as finished lenses (7015) instead of primary polymer