Semiconductor Wafer Grinder Vacuum Chuck from Mexico
Porous ceramic vacuum chuck for holding 300mm silicon wafers during double-sided grinding to achieve parallelism tolerances. Solely for wafer grinder equipment of heading 8430. Other parts under 8431.49.90.
Duty Rate — Mexico → 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
• Include wafer size compatibility (200/300mm) and vacuum pressure specs
• Pitfall: generic chucks under 8414.10
• Requires ESD-safe material certification