Yan Haitao once served enterprises.

China Construction Bank, China Merchants Bank, CLP Photovoltaic, China Mobile, Tsingtao Brewery, Huaneng Power, Zhao Jin Group, China International Travel Service, Hisense Group, Degussa Chemical, TDK Company, China Resources Su Guo, Minsheng Pharmaceutical, Yuancheng International Freight, Lv Qing Group, Zhongtianheng Group, LG Chemical, Anyang Water Supply Company, Jilin Post, Zhongnan Machinery, Hua Fu Amusement Park, Shiseido and Zhongwang Group. Jinghua Group, Jiangsu Tomson, Jiangsu Aokaile Biotechnology, Changjiang Pharmaceutical, Qinglian Doors and Windows, Yi Ming Bio, Jiangsu Meilanchun Wine Industry, Henan Union Medical College Hospital, Hechuan International Logistics, Zibo Luzhong Cement, Asia-America-Europe English Education Group, Hengda Group, Ocean Science and Technology Museum, Liaocheng Electric Power Bureau, Zibo Chongshan Cement, Binzhou Obetec, Hao Yue Building Materials, Xiaoxing Steel Cord, excellence group, Jianfa Real Estate, Qingdao. Hailier Pharmaceutical Co., Ltd., Wanhai Shipping Co., Ltd., New Zealand Taikangna Co., Ltd., Lidong Chemical Co., Ltd., Huazhong Pharmaceutical Co., Ltd., Changcheng Yingte Leather Co., Ltd., Korea Yinleduo Co., Ltd., Xiyuan Project Cost, Minlian Hotel Group, High Quality Grain and Oil Co., Ltd. and Feng Guang Precision Co., Ltd.