Boule Grinder Diameter Gauge from China
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 — China → United States
20%
Rate breakdown
9903.05.3112.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of China, as provided for in U.S. note 52 to this subchapter
9903.88.157.5%Except as provided in headings 9903.88.39, 9903.88.42, 9903.88.44, 9903.88.47, 9903.88.49, 9903.88.51, 9903.88.53, 9903.88.55, 9903.88.57, 9903.88.65, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(r) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(s)
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