Specialized equipment for applying chemical and physical treatments to material surfaces such as metals, plastics, and ceramics. Includes plating equipment, anodizing equipment, blast equipment, chemical etching equipment, PVD/CVD equipment, etc. Used for surface modification treatments aimed at improving product corrosion resistance, providing decorative properties, enhancing adhesion, and controlling electrical characteristics. Distinguished from simple cleaning/washing equipment and painting equipment, this equipment group specializes in surface layer formation and modification through chemical reactions and physical changes.