Float Zone Crystal Grower Vacuum Chamber Pump from Germany
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 — Germany → United States
10%
Rate breakdown
9903.05.3910%Section 301 (forced labor) — European Union member state (col1 rate < 10 percent): MFN < 10% → total duty capped at 10%
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