Crystal Boule Cooling Station from China
Industrial cooling apparatus for controlled annealing of monocrystalline silicon boules after Czochralski crystal growth, preventing defects from thermal stress. Classified in 8419.89.9540 for semiconductor material treatment involving precise temperature reduction. Essential for wafer manufacturing 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
• Provide crystal grower integration specs and cooling rate data to confirm classification
• Ensure documentation distinguishes from general industrial chillers under 8418