Thermoregulating Valve for Wafer Lapping Machine Coolant from Canada
Self-operating valve maintains lapping slurry temperature for achieving wafer flatness tolerances <1µm. Classified under HTS 8481.80.9015 for temperature control in semiconductor wafer preparation lapping equipment. Prevents thermal distortion during precision surface preparation.
Duty Rate — Canada → United States
12%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Specify temperature stability (±0.1°C) required for lapping process control
• Document use in single/dual wafer lappers for classification support