Rebuilt Crystal Flat Grinder from Mexico
Used machine for grinding orientation flats on silicon boules to denote resistivity and doping type. HTS 8463.90.0040 for rebuilt metal/cermet tools without removal. Key for wafer identification in fabs.
Duty Rate — Mexico → United States
14.4%
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
• Specify flat length/position tolerances per SEMI standards
• Include rebuild warranty against flat accuracy drift
• Avoid describing as 'lapping' to prevent 8460 shift