99.99% Pure Refined Copper Block Sheet 7mm Thick from Mexico
Ultra-pure 99.99% refined copper block sheet, 7mm thick, for semiconductor heat sinks. HTS 7409.19.10.00 for refined copper plates >5mm. Exceptional purity minimizes impurities.
Duty Rate — Mexico → United States
53%
Rate breakdown
9903.82.0250%Except as provided for in headings 9903.82.14, 9903.85.67 and 9903.85.68, articles of aluminum, of steel or of copper and derivative aluminum or steel articles, as provided for in subdivisions (c)(i)–(v) of U.S. note 16 to this subchapter
9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)
Import Tips
• Require vendor certification of 99.99% Cu content for refined copper proof
• Measure thickness at multiple points; must exceed 5mm uniformly
• Segregate from alloy inventory to prevent cross-contamination claims