1992.09-1997.11Deputy Director of Chemical Fiber Factory of Daqing Petrochemical Complex.
1997.11-1999.09 as the director of the acrylic fiber plant of Daqing Petrochemical General Factory.
2001.12—From August 2003, Comrade Yu Baocai served as deputy general manager of Daqing Petrochemical Company, and Daqing Petrochemical Company served as general manager and deputy secretary of the Party Committee.
September 2003-General Manager and Party Secretary of Lanzhou Petrochemical Company
In June 2007, he served as the general manager of China Petroleum Lanzhou Petrochemical Company and the deputy secretary and general manager of the Party Committee of China Petroleum Lanzhou Petrochemical Company.
In September 2008, he served as deputy general manager and member of the party group of China Petroleum and Natural Gas Corporation.
In February 2003, he was elected as a deputy to the Tenth National People's Congress, and in February 2008, he was elected as a deputy to the Eleventh National People's Congress.