Polytrimethylene Terephthalate (PTT) Pellets from Mexico
PTT resin pellets are a polyester produced from terephthalic acid and 1,3-propanediol, used in textiles and engineering plastics. Classified in 3907.99.5050 as it qualifies as 'other polyesters' where the ester monomers predominate by weight over other units.
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
• Provide lab analysis showing >95% predominant polyester monomers to comply with Chapter 39 subheading classification rules
• Label as 'primary forms' distinctly from compounded masterbatches which may require different statistical suffixes
• Check for bio-based content declarations that might affect alternative classifications under renewable polymer provisions