Liu ling: Male, China nationality, without permanent residency abroad, born in June, 1983, Ph.D., associate professor of Changzhou University. 20 1 1 has worked in the department of process equipment and control engineering, School of Mechanical Engineering, Changzhou University. From 20 1 1.00 to 20 1.04, he was a visiting scholar at the Hof Institute in Flawn. 2065 438+07-2065 438+09, Vice President of School of Mechanical Engineering of Changzhou University and Vice President of Urban Rail Transit College. From June 20 17 to June 20 19, he served as an independent director of seagull. At present, he is also a member of Tribology Committee of Jiangsu Mechanical Engineering Society, a peer review expert of mechanical engineering discipline of National Natural Science Foundation of China, and a supervisor of Nanjing Haituo Energy Chemical Technology Co., Ltd.