Crystal Boule Grinder from Germany
Precision grinder for shaping semiconductor crystal boules to exact wafer diameters and grinding flats to indicate conductivity type. Part of wafer preparation equipment under heading 8428 machinery. Covered by 8431.39.00 for other parts of such semiconductor processing machines.
Duty Rate — Germany → 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
• Document precision tolerances to prove semiconductor-specific use; obtain supplier affidavits
• Avoid pitfall: classifying as general metal grinders