GB 2423.38-1990 standard specifies water test methods for electrical and electronic products to evaluate the performance of products in wet or water environments. The test simulates the performance of products in humid, rainwater and other environment conditions, including water spraying, soaking, etc. The standard describes in detail the test equipment, operation procedures, test conditions and evaluation methods to ensure the tolerance and functional Stability of the product in the water environment to verify its waterproof ability and long-term Reliability.