Crystal Puller Chamber Vacuum Pump from China
High-vacuum pump for the growth chamber of Czochralski pullers, evacuating to ultra-low pressures for pure silicon crystal formation in semiconductor boule production. HTS 8414.59.65.95 classification for other vacuum pumps in wafer manufacturing equipment. Achieves pressures below 10^-6 torr essential for defect-free crystals.
Duty Rate — China → United States
37.3%
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
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 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(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Import Tips
• Vacuum spec sheets mandatory; EAR export control checks for high-vac tech
• Avoid misclassification as lab pump without crystal grower context