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3911.90.45.00/Polysulfone Thermosetting Beads/Mexico

Polysulfone Thermosetting Beads from Mexico

Beads of polysulfone resin with thermosetting modifications containing aromatic sulfone units for medical device molding. HTS 3911.90.4500 as polysulfones specified in note 3, thermosetting primary form. Offers biocompatibility and sterilizability.

Duty Rate — Mexico → United States

15.8%

Rate breakdown

9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
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Import Tips

• Certify biocompatibility if for medical use; note affects FDA clearance timing

• Prove sulfone aromatic > predominant monomer per note (a)(4) comparison