Aromatic Polysulfone PSU 1700 from Canada
High-performance thermoplastic polysulfone resin with aromatic ether-sulfone monomer units in primary granular form. Specifically covered under HTS 3911.90.25.00 for polysulfones containing aromatic monomers.
Duty Rate — Canada → United States
6.1%
Rate breakdown
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Import Tips
• Certify monomer analysis showing ≥95% aromatic units per subheading note (a)(1)
• Use heat-sealed bags to maintain primary form status
• Pitfall: engineering plastic blends may trigger 3904.40 reclassification