Czochralski Crystal Puller from China
A machine tool used to produce monocrystalline silicon boules by pulling a seed crystal from molten silicon in a vacuum chamber, grinding the boule to precise diameter for wafer production. Classified under HTS 8464.90.0120 as it functions as a grinder for semiconductor crystal ingots, akin to mineral material processing. Essential for semiconductor wafer manufacturing.
Duty Rate — China → United States
37%
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 machine specifications match statistical note for semiconductor crystal growers to avoid reclassification
• Provide detailed technical documentation proving boule grinding function for customs valuation
• Ensure EPCG license if importing for semiconductor fab; watch for anti-dumping on precision grinders