The standard is ISO 11507-1997 "Artificial aging exposure exposure of Paints and varnishes coatings to Fluorescent Ultraviolet and Water". The standard specifies the test method for artificial aging exposure of Paints and varnishes coatings by the combined action of Fluorescent Ultraviolet and water, and clarifies the equipment requirements, exposure cycle, operation steps and performance evaluation. By simulating ultraviolet light and humid environment, it is used to evaluate the weathering resistance of coatings under artificial accelerated aging conditions. Provide technical specifications for aging performance testing and quality control of Coating products.