Czochralski Crystal Puller Vacuum Pump from China
This vacuum pump is a critical part of Czochralski crystal growers used to produce monocrystalline silicon boules for semiconductor wafers. It maintains the ultra-high vacuum environment necessary during the crystal pulling process to ensure purity and quality. Classified under HTS 8414.90.91 as a part of vacuum pumps specialized for semiconductor manufacturing equipment.
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
• Provide detailed technical specifications and end-use statements proving semiconductor manufacturing application to qualify for duty-free treatment under Note 3
• Ensure HS classification documentation references statistical note (a)(i) for crystal growers to avoid misclassification as general vacuum pumps