GB/T 2423.60-2008 "Environmental testing of electrical and electronic products - Part 2: Test methods, test U: strength of the lead-out end and the overall mounting part" stipulates the test method of the strength of the lead-out end and the overall mounting part of the electrical and electronic products. The standard specifies the test equipment, test conditions, test procedures and result evaluation requirements. By simulating different stress scenarios, the performance of related components under mechanical stress is tested, and the structural strength and Reliability are evaluated. Provide normative guidelines.