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8419.89.95.40/Float Zone Crystal Cooling Trough/Mexico

Float Zone Crystal Cooling Trough from Mexico

Liquid-cooled trough system for float zone silicon crystal growth, rapidly quenching the molten zone to form defect-free monocrystalline ingots for wafer slicing. HTS 8419.89.9540 for specialized cooling in semiconductor boule manufacturing. Matches statistical note (a)(i).

Duty Rate — Mexico → United States

14.2%

Rate breakdown

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

• Provide float zone furnace integration drawings and cooling gradient specifications

• Distinguish from general industrial cooling towers via semiconductor boule dimensions