Float Zone Crystal Grower RF Heating Coil from China
Radio frequency induction coil for float zone crystal growers producing ultra-pure silicon ingots without crucibles. Enables zone refining for high-resistivity wafers. Counts as parts of semiconductor crystal pullers/growers in 8442.40.00.00.
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 RF frequency specs (typically 300-450 kHz) and coil turns ratio for technical validation
• Water-cooling channel integrity must be certified for safe customs clearance
• Avoid bulk copper wire imports; classify only as complete semiconductor assemblies