At the invitation of Liaoning Provincial Transportation Quality Supervision Bureau, our technical director Zhu Jigang gave a special lecture on "Application of Shock Elastic Wave Detection Technology" at the Liaoning Academy of Communications on March 10. Class A testing units in Liaoning Province (Testing Center of Liaoning Provincial Academy of Communications, Testing Center of Liaoning Provincial Communications Regulations, Testing Center of Liaoning Provincial Communications Commission), Liaoning Provincial Water Resources Design Institute, Dandong Highway Quality Supervision Office, Liaoning Provincial Transportation Quality Supervision Bureau Relevant expert leaders participated in the meeting and conducted technical discussions.