PVD (Physical Vapor Deposition) is a surface coating technology that gasifies a material source through physical means in a vacuum environment, allowing atoms, molecules, or ions to migrate and deposit onto the substrate surface to form a functional thin film. Its core advantages include a dense and wear-resistant coating, strong adhesion, and environmental friendliness. Compared with traditional electroplating technology, PVD enables a denser and more uniform film layer with a hardness of over HV2000. It significantly improves wear resistance, corrosion resistance, and high-temperature resistance (up to 600°C for some applications), extending service life by 3 to 5 times. Additionally, it can achieve special functions such as antibacterial and conductive properties. It is widely used in cutting tools, electronics, decoration, and other fields.