</>Build with Tariff Intelligence|Programmatic access to tariff calculations and HS code classification.Explore Developer Resources →

Diallyl Isophthalate Resin Granules from Canada

Unsaturated polyester resin based on diallyl isophthalate in granular primary form for high-performance composites. Falls under HTS 3907.91.4000 as 'other' allyl resins due to allyl ester structure and >95% qualifying monomer content. Used in aerospace and automotive parts molding.

Duty Rate — Canada → United States

15.8%

Rate breakdown

9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada

Import Tips

Submit detailed polymer spec sheets showing allyl monomer dominance; use ISO-certified testing

Avoid bulk bags over 25kg if mislabeled as articles

Common pitfall: reclassification if fillers exceed 5% by weight