This standard describes direct static exposure test methods for complete vehicles under outdoor natural atmospheric environment conditions, including test sites, conditions, samples, Measuring methods and result evaluation. It is suitable for evaluating the aging corrosion performance of materials, components and assemblies such as coatings, rubber, plastics, artificial leather, fiber Spinning & weaving products of complete vehicles in atmospheric environments. It refers to a series of related standards, such as plastic atmospheric exposure test methods, Paints and varnish coating aging rating methods, etc. These standard documents provide consistent methods and standards to ensure the accuracy and Reliability of tests.