Mr. Cao is a professor level senior engineer with a master degree. In April 1997, he was appointed as Deputy Director General of Shengli Petroleum Administration; in May 2000, he served concurrently as Vice Chairman of the Board of Directors of Sinopec Shengli Oilfield Co., Ltd.; in December 2001, he served as Board Director and President of Sinopec Shengli Oilfield Co., Ltd.; in December 2002, he served as Director General of Shengli Petroleum Administration of China Petrochemical Corporation and Chairman of Board of Directors of Sinopec Shengli Oilfield Company Limited; from April 2003 to May 2006, he served as Employee Representative Board Director of Sinopec Corp.; in October 2004, he was appointed as Assistant to President of China Petrochemical Corporation; in November 2005, he was appointed as Vice President of China Petrochemical Corporation; in May 2009, he was elected as Board Director of Sinopec Corp.; in June 2012, he was appointed concurrently as Chairman of Sinopec Oilfield Service Corporation.
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