Wafer Crystal Grinder Coolant System from China
Coolant delivery and temperature control system for crystal grinders preparing semiconductor boules to precise diameters per statistical note (a)(ii)(A). Maintains grinding wheel and boule temperatures for accuracy. HTS 8419.89.9540 cooling for wafer preparation.
Duty Rate — China → United States
39.2%
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
• Specify boule diameter tolerances (150-450mm) and flat grinding specs
• Document integration with CZ/float zone boule grinders
• Avoid 8466 tool classification by emphasizing temperature treatment function