Fabry-Perot Interferometer Spacer from Germany
Precision invar spacer tube maintaining cavity length in Fabry-Perot laser spectrum analyzers. Falls under HTS 9013.90.70.00 as an optical instrument part.
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
• Specify thermal expansion coefficient (1.2×10^-6/°C) proving precision function
• Include finesse calculation data showing spacer criticality
• Document material certification for dimensional stability