Metal electroplating is a technique of coating metal on another metal or non-metal surface. This technology can increase the luster and rust resistance of metals, while also changing the color and appearance of the surface.

However, during the metal electroplating process, a thin film is formed on the surface of the substrate, which can cause deformation of the substrate. This deformation may cause irregular shapes such as protrusions or depressions on the surface. Therefore, in order to ensure a flat surface after electroplating, it is necessary to perform leveling treatment on the substrate.
Leveling is a method of restoring a material to its original shape through mechanical or heat treatment. In metal electroplating, leveling is usually achieved through mechanical treatment. This treatment can use pressure or tension to stretch the substrate and restore its original shape.
In summary, in order to ensure a smooth surface after metal electroplating, leveling treatment must be carried out. This is a key step in ensuring the quality of metal electroplating.

