After completing his studies, Zhang Haichao successively held several important positions in China Petrochemical Company. 1March 1998 to1September 1999 served as deputy general manager of Zhejiang Petroleum Corporation; 1From June 1999 to February 2000, he served as the general manager of Zhejiang Petroleum Corporation; From February 2000 to September 2005, he served as the manager of China Petrochemical Zhejiang Petroleum Company; From April 2003 to April 2006, he served as the employee representative supervisor of the second board of supervisors of China Petrochemical Corporation; Since April 2004, he has served as the chairman of Sinopec Bibi Zhejiang Petroleum Sales Co., Ltd.; June 5438 +2004 10 to present Party Secretary, Vice Chairman and Deputy Manager of China Petrochemical Sales Co., Ltd.; Since June 2005, he has served as the vice president of China Petrochemical Company.