Czochralski Crystal Puller Pump from China
A high-precision liquid pump used in Czochralski crystal growers to control the flow of molten silicon during monocrystalline boule production for semiconductor wafers. It falls under HTS 8413.81.0040 as an other pump specifically for semiconductor manufacturing equipment. This pump maintains stable melt levels critical for defect-free crystal growth.
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
• Verify pump specifications match semiconductor process requirements for correct subheading; provide equipment end-use documentation to avoid reclassification
• Ensure compatibility certifications for cleanroom environments to prevent customs holds