Fluorosulfonated Polymer Powder (for Membranes) from Japan
Fluorinated polymer powder with sulfonyl groups for ion-exchange membranes, classified as other fluoropolymers in HTS 3904.69.5000 primary forms. Chemical modification keeps it in 'other' per subheading note (a)(3).
Duty Rate — Japan → United States
16.5%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• Document modification process to justify 'other' classification vs unmodified base polymer
• Declare intended end-use as industrial resin, not fabricated article
• Ensure powder form; dispersions classify under 3824