Float Zone Crystal Grower Vacuum Chamber Pump from China
Specialized vacuum pump component for float zone crystal growers that produce high-purity silicon crystals by float zone methods for wafer production. It handles the vacuum requirements for zone refining processes in semiconductor manufacturing. Falls under HTS 8414.90.91 as parts of vacuum pumps for semiconductor crystal growth equipment.
Duty Rate — China → United States
37.5%
Rate breakdown
9903.05.3112.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of China, as provided for in U.S. note 52 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
• Include float zone method technical literature and equipment blueprints to demonstrate statistical note (a)(i) applicability
• Verify pump's vacuum rating meets semiconductor purity standards (better than 10^-7 torr) for proper classification