Zhang Jiaren, male, Han nationality, graduated from Hefei Industrial University with a specialty in engine and electrical equipments. He is a senior economist and professor.
Zheng spent most of the late 1980s and early 1990s involved with the Zhenhai Petroleum Chemical Factory, part of the SINOPEC Corporation. In 1994, he joined the Zhenhai Refinery Chemical Corporation Limited as their chairman and general manager.
After serving in those capacities for four years, he became the deputy general manager of the SINOPEC Group in 1998. Two years later, he was appointed to the director and vice-president positions with the group. In addition, he became chief financial officer of the group in 2000.