Lingdi Liu is an independent researcher and consultant dedicated to advancing sustainable supply chain management (SSCM) practices. In addition to her professional role, she teaches online courses on SSCM, sharing her expertise with a broader community of learners. She earned her Ph.D. in Management Science and Engineering from the School of Economics and Management at Beihang University. Her primary research interests lie in the development of sustainable supply chain for smart product-service systems, focusing on the integration of digital technologies to enhance circularity and operational efficiency. Her research has been published in leading international journals, including Computers & Industrial Engineering and Advanced Engineering Informatics.
Wenyan Song is a professor at School of Economics and Management, Beihang University (Beijing University of Aeronautics and Astronautics). His main research interest is Development of Product-Service Systems (PSS). He has published on European Journal of Operational Research, International Journal of Operations & Production Management, Journal of Cleaner Production, International Journal of Production Research, Journal of Manufacturing Systems, and Journal of Engineering Design, among others. He previously worked on several research projects on development of PSS. He earned his Ph.D. in Industrial Engineering at Shanghai Jiao Tong University (SJTU), and worked as a postdoctoral researcher at Technische Universitaet München (TUM), Germany.