Crystal Boule Grinder Rotating Blade from Mexico
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 — Mexico → United States
10%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
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