On June 23, Wu Jinwa, former chairman of Binzhou CPPCC; Bu Naizhang, former party secretary of Binzhou University; Hou Xianxiu and Tian Baoli, former deputy directors of the Standing Committee of the Municipal People's Congress; Wei Ketian, former member of the Standing Committee of the Municipal Party Committee and former chairman of the Municipal Federation of Trade Unions; Liu Xiangqing, former vice chairman of Municipal Association, visited Weiqiao Pioneering Group for investigation. Lv mingtao, secretary of Zouping Municipal Party Committee, Zhang Qian, deputy secretary of Zouping Municipal Party Committee and Mayor of Zoupnig, and other leaders attended the event. Zhang Hongxia, secretary of the Party Committee and general manager of the Group, accompanied the visitors.