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Glucydur Balance Spring for Chronograph Watches from Germany

Glucydur alloy balance spring optimized for high-frequency chronograph movements (4Hz operation). Classified in HTS 9114.90.34.00 as a hairspring for watch timekeeping regulation.

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 balance wheel material compatibility in technical docs; alloy pairs affect classification

Frequency certification (beats per hour) proves watch movement application

Avoid generic 'spring' labeling; use 'hairspring for watch movements' explicitly