The QC/T 17-1992 standard specifies the basic rules for accelerated weathering of automotive parts. The standard covers the purpose, method and evaluation criteria of accelerated weathering, which is mainly used to evaluate the durability and Stability of automotive parts under different environment conditions. The standard specifies the test environment, test procedures and result analysis to ensure that automotive parts can maintain performance and Appearance Stability during long-term use, thereby improving the overall Reliability and Safety of the vehicle.