Surface treatment is a process that applies physical or chemical modifications to the surface of a material to enhance its appearance, corrosion resistance, wear resistance, or adhesion properties. Common methods include electroplating, anodizing, sandblasting, painting, passivation, and black oxide treatment. The choice of method depends on the material and its intended application. For metal parts, surface treatment prevents oxidation, extends lifespan, and improves the product’s texture and recognizability. Plastics can also undergo electroplating or coating to enhance functionality. Surface treatment is typically performed at the final stage of production and plays a critical role in the end product’s quality. It can be customized based on customer requirements, product characteristics, and usage environment.