Crystal Boule Grinder from China
Precision grinder for shaping silicon boules to exact diameters and flats indicating conductivity, often using glass tooling or enclosures for thermal control during hot processing. Under HTS 8475.29.00.00 as other glassware manufacturing machine per statistical notes on wafer preparation. Ensures wafers meet semiconductor fabrication tolerances.
Duty Rate — China → United States
35%
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
9903.88.0225%Except as provided in headings 9903.88.12, 9903.88.17, 9903.88.20, 9903.88.54, 9903.88.59, 9903.88.61, 9903.88.63, 9903.88.66, 9903.88.67, 9903.88.68, 9903.88.69, or 9903.88.70, articles the product of China, as provided for in U.S. note 20(c) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(d)
Import Tips
• Include boule diameter specs and flat grinding documentation; certify for cleanroom compatibility
• Pitfall: classifying as general metal grinder without semiconductor context