Unsaturated Polyester Electrical Insulation Board from Mexico
Rigid boards of noncellular unsaturated polyester for electrical panel insulation and transformer covers. Classified HTS 3920.63.2000 as other polyester sheets. High dielectric strength.
Duty Rate — Mexico → United States
15.8%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Include dielectric strength test data for customs verification
• Classify as semi-finished, not electrical apparatus parts
• Watch copolymer blends; may shift if another monomer predominates