Crystal Boule Grinder for Wafer Diameter Precision from Canada
This grinder shapes semiconductor crystal boules to exact diameters and flats indicating conductivity, preparing them for wafer slicing in printing ancillary processes under heading 8442. Critical for flatness tolerances in photolithography printing. Classified in 8443.91.10.00 as printing machinery ancillary.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Submit engineering drawings of grinding specs tied to printing tolerances for smooth clearance
• Use prior notice for high-value units over $10K