Wafer Grinder Air Bearing Chuck from Canada
Porous ceramic air bearing chuck that holds semiconductor wafers during grinding with near-zero friction and contamination. Maintains wafer flatness within 0.1 microns. Essential part of wafer grinder/polisher equipment under 8442.40.00.00.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• Provide porosity specs (20-40%) and air pressure ratings (40-60 psi) in import docs
• Cleanroom certification and ESD-safe handling required for proper entry
• Single vs multi-wafer chucks may affect valuation; specify capacity clearly