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3911.90.15.00/Carstabil 90 PE Polymer/Mexico

Carstabil 90 PE Polymer from Mexico

Carstabil 90 PE Polymer is a thermoplastic primary form resin under HTS 3911.90.15.00, matching the exact chemical description of the aromatic carbodiimide homopolymer with polyethylene. Functions as anti-hydrolysis agent in PET bottle preforms and film extrusion, extending service life in humid environments. Polymer classification confirmed by >95% named monomer content per subheading rules.

Duty Rate — Mexico → United States

10%

Rate breakdown

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

• Request pre-shipment CBP classification binding ruling with full chemical structure and NMR analysis

• Ensure bill of lading describes as 'primary polymer forms, not articles' explicitly

• Pitfall: heat history documentation needed to prove non-chemically modified status per note (a)(3)

Carstabil 90 PE Polymer from Mexico — Import Duty Rate | HTS 3911.90.15.00