Float Zone Crystal Grower Vacuum Chamber Pump from Japan
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 — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
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