Core Viewpoint - The article highlights the rapid development of key industries in China, such as semiconductors, new energy, aerospace, and rail transportation, which has led to an increased demand for non-destructive testing (NDT) equipment and higher requirements for technology and product performance [1]. Event Overview - The fourth Non-Destructive Testing Technology Progress and Application Online Conference will be held from September 24 to 25, 2025, organized by Instrument Information Network [1][2]. - The conference will feature two main sessions: - The first day will focus on X-ray CT technology and applications, with experts from various institutions and companies sharing insights [1]. - The second day will cover new technologies and methods in non-destructive testing, with discussions on in-situ online testing, electromagnetic ultrasonic technology, and more [1]. Conference Agenda - **September 24**: - Presentations include applications of X-ray absorption imaging in material research, Neoscan micro-CT applications, and advancements in X-ray 3D and 4D CT imaging technologies [3]. - **September 25**: - Topics will include multi-parameter data fusion methods, electromagnetic ultrasonic testing technology, and ultrasonic guided wave testing applications [4]. Featured Speakers - Notable speakers include researchers and engineers from prestigious institutions such as the Chinese Academy of Sciences, Harbin Institute of Technology, and Jilin University, who will present their latest research and applications in non-destructive testing [5][6][7].