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3902.90.00.10/Industrial Polybutylene PB-402/Mexico

Industrial Polybutylene PB-402 from Mexico

Industrial Polybutylene PB-402 is a high molecular weight polybutylene in granular primary form, with 96.5% butene-1 content for injection molding applications. Used in flexible packaging films and sealants due to its clarity and toughness. HTS 3902.90.0010 applies as pure polybutylene per Chapter 39 polymer classification rules.

Duty Rate — Mexico → United States

16.5%

Rate breakdown

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

• Test for exact polymer composition; customs may require FTIR analysis for 95% verification

• Avoid packaging that suggests finished goods to prevent reclassification under 3920-3926