Crystal Boule Grinder Rotating Blade from Canada
Rotating diamond-impregnated blade for grinding semiconductor crystal boules to exact diameters and flats indicating conductivity type, as in statistical note (a)(ii)(A). Classified under HTS 8406.90.70.00 as rotating blade of vapor turbine grinders in wafer preparation equipment. Ensures wafers meet strict semiconductor industry standards for resistivity uniformity.
Duty Rate — Canada → 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
• Document flat grinding specs for conductivity marking (e.g
• <0.5° tolerance) to tie to statistical note requirements
• Use customs ruling requests for blades >300mm boule capacity to preempt challenges