Float Zone Crystal Grower from China
Centrifugal apparatus employing the float zone method to purify and grow semiconductor crystals like silicon by melting and recrystallizing zones in a controlled inert gas environment with dust filtration. Classified under HTS 8421.39.0115 due to its built-in air purification systems that filter out particulates to prevent contamination during high-vacuum zone refining. Critical for producing ultra-pure silicon ingots for wafer slicing.
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
9903.88.0125%Except as provided in headings 9903.88.05, 9903.88.06, 9903.88.07, 9903.88.08, 9903.88.10, 9903.88.11, 9903.88.14, 9903.88.19, 9903.88.50, 9903.88.52, 9903.88.58, 9903.88.60, 9903.88.62, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(a) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(b) [to this subchapter]
Import Tips
• Submit technical drawings showing gas filtration modules to customs for proper dust collection classification
• Ensure compliance with cleanroom standards (ISO 14644) certification for import validation