JC/T 2660-2022 "Building materials and components salt fog/dry/wet/light aging coupled cyclic exposure accelerated test method" stipulates the accelerated exposure test method of building materials and components in simulated ultraviolet and salt fog/dry/wet environment. The standard includes the preparation of test solution, the requirements of test equipment, the selection of specimen, the setting of test conditions, the arrangement of test period, and the evaluation and report preparation of test results. It is suitable for evaluating the performance changes of building materials under coastal atmospheric environment conditions. It is an important reference standard for conducting coupled environment exposure testing.