Crystal Boule Grinder from Mexico
Precision grinder that shapes semiconductor crystal boules to exact diameters and flats, using coolant systems with temperature regulation during abrasion. Classified in HTS 8419.39.0280 for cooling processes integral to material treatment. Prepares boules for wafer slicing in semiconductor fabs.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Document coolant flow and temperature control features to justify cooling process classification
• Obtain manufacturer affidavits confirming non-domestic, industrial use only
• Avoid pitfalls by not classifying as mere machine tools; stress material treatment