GB/T 2423.24-2022 "Environmental Testing - Part 2: Test Methods - Test S: Simulated Solar Radiation at Ground Level and Guidance for Solar Radiation Testing and Weathering" is identical to the international standard and specifies test methods for simulating solar radiation at ground level. It evaluates the weather resistance and aging performance of outdoor electrical and electronic products, automotive components, building materials, etc., by simulating solar radiation intensity, spectral distribution, and temperature effects, assessing issues such as material discoloration, cracking, and performance degradation. This standard is applicable to various products used or stored outdoors, providing a scientific basis for product design optimization and quality inspection, and ensuring the reliability of products in solar exposure environments.