Liquid Polysulfone Concentrate from Canada
Low-viscosity thermoplastic polysulfone in concentrated solution primary form, but solid-adjusted for 3911.90.91.10 as other thermoplastic per notes. Used in specialty coatings.
Duty Rate — Canada → United States
16.5%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Specify <50% solvent to argue primary thermoplastic vs dispersion
• Stability data prevents reclass as 3917 tubes if hose-applied