Czochralski Crystal Puller Vacuum Pump from China
This vacuum pump is integral to Czochralski crystal growers used in semiconductor manufacturing to produce monocrystalline silicon boules by maintaining a controlled vacuum environment during the crystal pulling process. It falls under HTS 8414.59.65.95 as an other fan or vacuum pump specialized for semiconductor wafer production equipment. The pump ensures ultra-pure conditions essential for slicing high-quality wafers.
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
• Verify equipment is exclusively for semiconductor manufacturing to qualify for potential duty exemptions; provide detailed technical specs and end-use certificates
• Common pitfall: misclassifying as general industrial pump without wafer-specific documentation