Float Zone Crystal Grower Vacuum Chamber Pump from Japan
Specialized vacuum pump component for float zone crystal pullers that produce ultra-pure silicon rods for wafer slicing in semiconductor fabs. Classified under HTS 8414.90.91.80 per statistical note for wafer manufacturing equipment parts. Enables the high-vacuum conditions required for zone refining process.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Submit process flow diagrams showing integration in float zone apparatus; critical for statistical note coverage
• Label with semiconductor-specific part numbers
• Pitfall: missing fab end-use proof leads to higher general parts duty