We are honored to welcome you to the 9th International Conference on Frontiers of Sensors Technologies (ICFST 2025), which will be held in the vibrant city of Shenzhen, China during December 19-21, 2025. It is hosted by South University of Science and Technology, China. As we all know, Sensors Technologies have revolutionized many aspects of our lives, from healthcare and transportation to environmental monitoring and smart cities. In recent years, significant advances in sensor technology have allowed for the development of smaller, more sensitive, and more reliable sensors, as well as for the integration of sensors with other technologies, such as Internet of Things (IoT) and Artificial Intelligence (AI). This has opened up exciting new possibilities for improving our lives and tackling some of the world's most pressing challenges. ICFST 2025 will provide a platform for researchers, engineers, and industry professionals from around the world to share their latest research findings, innovations, and ideas in the field of Sensors Technologies. The conference will feature keynote speeches, invited speeches, technical presentations and poster sessions on a wide range of topics related to sensors technology.