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
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
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