The SAE J2527-2017 standard specifies a method of accelerated exposure of automotive exterior parts using xenon arc devices with controlled irradiance. This method is designed to simulate the aging process of automotive parts exposed to sunlight in actual use in order to evaluate their weathering performance. The standard describes in detail the requirements and operating procedures of exposure equipment, including control of irradiance and exposure cycles. Through this test, the durability and color Stability of exterior parts under different climate conditions can be evaluated, ensuring that it can maintain performance and Appearance under various environment conditions.