8479.90.41.00/Boule Grinder Diameter Gauge/Japan

Boule Grinder Diameter Gauge from Japan

In-process laser diameter measurement gauge for crystal boule grinders ensuring wafers cut from boule meet SEMI diameter tolerances (±0.5mm). Real-time feedback to CNC controls. Part of 8479.89.10 crystal grinders under 8479.90.41.00.

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 measurement accuracy (±1μm) and scanning speed specs,Include SEMI standard references (M1-0302 for 300mm wafers),Careful distinction from Chapter 90 instruments