Wafer Lapping Machine Pressure Control Board from China
This PCA regulates pneumatic pressure systems in wafer lappers that achieve flatness tolerances for semiconductor wafer fabrication. It maintains nanometer-level uniformity across wafer surfaces. As a part of semiconductor manufacturing equipment, it falls under heading 84.71.
Duty Rate — China → Canada
0%
Import Tips
• Classify the pressure control board as a printed circuit assembly under 8473.30.20
• Provide documentation that the lapping machine is used in semiconductor manufacturing
• Verify if the board is a separate part or integrated, as this may affect classification