Czochralski Boule Diameter Grinder from Mexico
Specialized grinder head for reducing Czochralski-grown silicon boule diameter to wafer specifications. Essential part of semiconductor crystal processing machinery under HTS 8474.90.00.90 for mineral grinding.
Duty Rate — Mexico → United States
15%
Rate breakdown
9903.82.1015%Except as provided for in headings 9903.82.12, 9903.82.17 and 9903.85.68, derivative aluminum and steel articles with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 15 percent, as provided for in subdivision (f) of U.S. note 16 to this subchapter
9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)
Import Tips
• Include boule size range (150-450mm) and flat grinding specs in documentation
• Obtain binding ruling if equipment handles multiple crystal types beyond semiconductors