Dr. Zeng is also the Fulbright visiting scholar (2018-2019), the chief technical advisor of Basel Convention Regional Centre for Asia and the Pacific, UNEP, the Editorial Board member of four international journals related to resource & environment, and Deputy Secretary-General, Circular Economy Branch of Chinese Society for Environmental Sciences in China. He ever worked as technical advisor of United Nations Development Programme (2015), visiting staff of Coventry University (2012), and visiting professor of Macquarie University (2017). Dr. Zeng has chaired or organized a couple of leading international meeting or workshop on resource flow and environmental management. He has established the close and strong collaboration with many leading scientists in resource and environmental sustainability.