Float Zone Crystal Grower from China
Float zone crystal growers use radio frequency heating to melt a narrow zone of polycrystalline silicon rod, allowing impurities to be zoned out while forming high-purity monocrystalline silicon for wafers. The process relies on localized heating and cooling for zone refining. Fits HTS 8419.89.95 for its temperature change processes in semiconductor material 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
• Include process flow diagrams showing RF heating and zone melting to confirm classification
• Check for Section XVI notes on machines with integrated testing functions that may require Chapter 90
• Label as semiconductor-specific to leverage potential duty suspensions