Chemical polishing is a non-contact processing technology that smooths and brightens metal materials by immersing them in a specific chemical solution and chemically dissolving the surface. Unlike mechanical polishing, it causes less processing stress and thermal impact, allowing for uniform treatment of complex shapes and delicate parts. Primarily, acidic or alkaline solutions are used to efficiently remove microscopic irregularities, burrs, and altered layers from the surface. It is widely applied to semiconductor components, lead frames for electronic components, medical devices, and precision machine parts for purposes such as surface cleaning, imparting luster, deburring, or improving adhesion in subsequent processes. High-precision surface modification is achieved by controlling the balance between the formation and dissolution of the passive film on the material's surface.