GB/T 2423.16-2008 "Environmental testing of electrical and electronic products - Part 2: Test methods, test J and guidelines: mildew-growing" stipulates the test methods and guidelines for mildew-growing of electrical and electronic products. Clarify the requirements of test equipment, strain selection, test procedures, etc., guide the simulated mold growth environment to test the mildew resistance of products, and provide the evaluation method of test results to provide a standard basis for evaluating the performance and Reliability of products in mildew-growing environment.