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Physical Vapor Deposition PVD Coating Machine Manufacturer - Technol Vacuum evaporation is a technology that heats and evaporates a target material under vacuum conditions, causing a large number of atoms and molecules to vaporize and leave the liquid plating material or the solid plating material surface (or sublimate), and ultimately deposit on the substrate surface. During the entire process, gaseous atoms and molecules will migrate directly to the substrate through minimal collisions in vacuum, and deposit on the surface of the substrate to form a thin film. The methods of evaporation include resistance heating, high-frequency induction heating, high-energy bombardment of plating materials by electron beams, laser beams, ion beams, etc.