Crystal Boule Grinder from Japan
Precision grinder that shapes semiconductor crystal boules to exact diameters and grinds orientation flats, preparing them for slicing into wafers used in glass-enclosed electronic lamps and tubes. HTS 8475.10.00.00 applies as part of the assembly process for devices in glass envelopes per chapter notes.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Submit engineering drawings highlighting flat-grinding for conductivity indication, linking to lamp assembly workflow
• Certify compliance with semiconductor material processing standards to prevent Chapter 90 optical grinder misclassification