Float Zone Crystal Furnace Auxiliary from China
RF power supply and zone control system auxiliary for float zone silicon crystal growth machines of heading 8444. HTS 8448.20.50.90 as parts suitable principally for semiconductor boule production equipment.
Duty Rate — China → United States
23.3%
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
9903.88.157.5%Except as provided in headings 9903.88.39, 9903.88.42, 9903.88.44, 9903.88.47, 9903.88.49, 9903.88.51, 9903.88.53, 9903.88.55, 9903.88.57, 9903.88.65, 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(r) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(s)
Import Tips
• Include frequency specifications (typically 0.5-10 MHz) confirming float zone process
• Provide vacuum chamber compatibility documentation
• Distinguish from general RF power supplies under 8504