At the invitation of Professor Yang Qiang and Professor Wang Hualin of the Marine Ecology and Advanced Equipment Engineering Center of ECUST, Professor John C. Crittenden, President of Brookbell Institute of Sustainable Development of Georgia Institute of Technology, Academician of American Academy of Engineering, Foreign Academician of Chinese Academy of Engineering, and Professor Menachem Elimelech, Professor of Environmental and Chemical Engineering of Yale University, Academician of American Academy of Engineering, and Foreign Academician of Chinese Academy of Engineering,  paid visits to ECUST on Dec. 19th, 2018.  The two professors delivered academic reports at the lecture hall of Yifu Building. Professor Yang Qiang presided over the academic report and more than 100 teachers and students attended the meeting and had a heated discussion afterwards.