Polyetherimide Resin Granules from Mexico
Polyetherimide (PEI) granules like Ultem are aromatic polyethers in primary form under HTS 3907.29.00.00, with imide-ether structures meeting the 95% polyether monomer requirement. Ideal for aerospace and high-temp electronics.
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 GPC chromatograms showing molecular weight distribution for polymer status
• Avoid set packaging with fittings; 3917 duties apply only with attached components
• Label clearly as industrial resin to dodge household article exclusions in 3924