Wuxi science and technology association. Wuxi Association for Science and Technology inquires that Jiangyin Association for Science and Technology in Wuxi can train and apply for nondestructive testing. In 2022, Wuxi * * 150 people successfully obtained the introductory certificate of nondestructive testing. Non-destructive testing refers to the method of inspecting and detecting the structure, nature, state, type, nature, quantity, shape, position, size, distribution and changes of internal and surface defects of the specimen with the help of modern technology and equipment without destroying or affecting the performance and internal organization of the object to be tested.