The ISO 2810 standard specifies the natural aging process of Paints and varnish coatings, including methods for coating exposure and evaluation. The standard evaluates the weathering resistance and performance of coatings by simulating the aging of coatings in the natural environment. The standard covers the exposure test of coatings under different climate conditions, and the evaluation method of coating Appearance, durability and performance after exposure. This method helps to accurately judge the Reliability and durability of coatings under long-term exposure, and is suitable for the research and evaluation of coating performance in the Coatings industry and scientific research institutions.