Polishing: Polishing (抛光)
A finishing operation that removes burrs, scratches and oxide from metal parts before plating. Polishing may be done with abrasive media, brushes or vibratory bowls, and it improves surface brightness and plating adhesion. Over-polishing can round edges and change dimensions, so time and pressure are controlled. Parts are inspected visually and dimensionally, and a smooth substrate is essential for a uniform, corrosion-resistant plated finish.