Crystal Boule Grinder Vacuum Hold-Down Pump from Canada
Vacuum pump used in crystal grinders to secure semiconductor boules during diameter and flat grinding for wafer production. HTS 8414.90.91.80 classification per statistical note (a)(ii)(A) for wafer preparation equipment parts. Provides precise wafer flat orientation indicators via ground flats.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Prove integration with boule grinders via technical drawings; essential for note coverage
• Semiconductor-specific corrosion resistance documentation
• Pitfall: general grinding vacs go to 8414.90.10