Monocrystalline Silicon boule Vacuum Valve from Canada
Vacuum isolation valve for boule processing chambers preventing contamination during wafer slicing/grinding prep. HTS 8481.90.9085 for semiconductor wafer manufacturing equipment parts.
Duty Rate — Canada → United States
25%
Rate breakdown
9903.82.0925%Except as provided for in headings 9903.82.16, 9903.82.20–9903.82.26 and 9903.85.68, articles of copper and derivative aluminum and steel articles, as provided for in subdivisions (c)(vi)–(viii) and (xi) 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
• Vacuum specs (10^-7 Torr) essential for classification docs
• Helium leak certification standard requirement