Polytrimethylene Terephthalate (PTT) Pellets from Mexico
PTT resin pellets are semi-crystalline polyesters used in textiles, carpets, and films, supplied in primary form. Classified in 3907.99.50 as 'other polyesters' since terephthalic and propanediol units predominate but do not fit named subheadings like 3907.60 or 3907.91.
Duty Rate — Mexico → United States
16.5%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Provide FTIR or NMR analysis proving PTT monomer dominance per subheading note (a)(4); avoid bulk packaging over 25kg bags to prevent bulk chemical misclassification; label with IV (intrinsic viscosity) value for quality verification