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Plasma treatment is one of the most effective processes for cleaning, activating and coating surfaces, and can be used to treat a variety of materials, including plastics, metals or glass. Surface cleaning by plasma processor can remove release agents and additives on the surface, and its activation process can ensure the quality of subsequent bonding process and coating process. For coating treatment, it can further improve the surface characteristics of the composite. Using this plasma technology, the surface pretreatment of materials can be done efficiently according to the specific process requirements.