</>Build with Tariff Intelligence|Programmatic access to tariff calculations and HS code classification.Explore Developer Resources →

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

9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada

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