Crystal Boule Grinder from Japan
Crystal boule grinders precisely grind semiconductor boules to exact diameters and create flats indicating conductivity type and resistivity. This preparation step ensures wafers sliced from the boule meet semiconductor specifications. Classified in HTS 8442.30.0150 as other machinery for preparing printing plates or components.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Document flat grinding specifications matching statistical note requirements for conductivity indication
• Provide maintenance logs for diamond grinding wheels to prove commercial value
• Ensure safety interlocks meet OSHA standards for high-speed grinding operations