Dong Da: Born in June, 1964, 10, China nationality, without permanent residency abroad, master, senior economist. He is currently the chairman of Tiancheng Environmental Protection. June 1986 Graduated from Northeast Institute of Technology; 1999 graduated from University of Science and Technology Beijing with a master's degree in March. 1July 1987 to1July 1993, 10 worked in the Ministry of Metallurgical Industry as a clerk, deputy director and director; 1993165438+10 to1June 1996, worked in sinosteel metallurgical industry economic and technological development corporation as deputy director and director of personnel department; 1999 worked in sinosteel metallurgical industry economic and technological development corporation from July 2003 to 10 as office director and deputy general manager; From June 2003 to March 2009, he worked in Sinosteel Equipment Co., Ltd., serving as deputy manager and manager of comprehensive management department, deputy general manager, deputy secretary of party Committee and secretary of discipline inspection commission; From March to October, 2009, he worked in Sinosteel Equipment Co., Ltd. as Party Secretary, Deputy General Manager and Director. 20 16 12 After that, he worked in Sinosteel Equipment Co., Ltd. as executive deputy secretary, deputy general manager and director of the Party Committee; Since September 2065438, he has worked in Sinosteel International Engineering Technology Co., Ltd. as a director and deputy general manager; 20 13, 1 1 to 20 14 worked in Sinosteel Tiancheng Environmental Protection Technology Co., Ltd. as the vice chairman; From June 2065438 to June 2004, he worked in Sinosteel Tiancheng Environmental Protection Technology Co., Ltd. as the chairman.