pretreatment system before painting/coating
Before painting/coating, it is necessary to eliminate the oil stains (such as: lubricating oil, emulsion, grease, perspiration, etc.) and dust on the surface of the coated object, so the cleaning is an indispensable process in the pretreatment system before painting/coating. The chemical treatment (conversion film treatment) or mechanical processing (such as shot blasting) for the coated object surface is selected according to the substrate, surface conditions of the coated object or the coating process requirements.
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