Mengjun Chen, professor, doctoral supervisor, has long been engaged in solid waste pollution control and recycling research. He has been selected as a reserve candidate for academic and technical leaders in Sichuan Province, won 2 provincial and ministerial awards, presided over more than 10 national/provincial projects including 4 National Natural Science Foundation of China, and published more than 60 papers as the first/corresponding author in top journals such as Environmental Science & Technology, Journal of Power Source, He has published more than 60 papers in TOP journals such as Environmental Science & Technology, Journal of Power Source, Environment International, Resource Conservation & Recycling, etc. He has been authorized more than 10 national invention patents and 2 PCT patents, edited 1 textbook "Principles of Solid Waste Resource Utilization", and participated in the editing of 5 group standards. He is also the editorial board member of Circular Economy, deputy secretary-general of the Solid Waste Branch of the Chinese Society of Environmental Science, vice president of the Electronic Product Recycling Branch of the China Materials Recycling Association, deputy director of the Resource Comprehensive Utilization Special Committee of China Green Supply Chain Alliance, expert of the Solid Waste and Chemical Management Technology Center of the Ministry of Ecology and Environment, expert of the Sichuan Provincial Prize Evaluation, and member of the Comprehensive Utilization Committee of Non-Ferrous Metallurgical Resources of the Nonferrous Metals Society of China. China Nonferrous Metals Society, member of the Comprehensive Utilization of Metallurgical Resources Committee, expert of the Expert Committee of China Renewable Resources Industry Technology Innovation Strategy Alliance, etc.