9031.49.90.00/Phase Measuring Interferometer/Japan

Phase Measuring Interferometer from Japan

Advanced optical instrument for phase map measurement of optical surfaces and wavefront analysis. High-precision metrology equipment under HTS 9031.49.9000 for optics manufacturing quality control.

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%

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Import Tips

• Specify phase resolution (nm RMS), aperture size, and interferogram sampling

• Include reference flat/cgp specifications and coating compatibility

• Document vibration isolation requirements and environmental controls