Crystal Boule Grinder Vacuum Extraction Pump from Japan
This pump is a part of crystal grinders that shape semiconductor boules to precise diameters and grind orientation flats, per statistical note (a)(ii)(A). It extracts grinding dust and maintains cleanroom vacuum conditions during boule preparation for wafer slicing. Classified as other vacuum pump parts under HTS 8414.90.91 for semiconductor equipment.
Duty Rate — Japan → United States
10%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• Include grinder blueprint showing pump integration for flat grinding and diameter control functions
• Certify compatibility with silicon/gallium arsenide boules to meet statistical note material specifications