&On June 27, 2019, Zhang Xiaohai, a member of the Party leadership group and deputy director of Shandong housing and urban rural development department, and a group of four people came to the group to investigate and discuss the development of prefabricated buildings. During the visit, Zhang Xiaohai visited PC workshop, steel processing and distribution workshop and light wall panel workshop of the Group Industrial Park. Xu pengqiang, chairman of the group, Zhu Jiuzhou, general manager and Fang Hai, chief engineer, participated in the above activities.         Yin Tao, the second-class inspector of Shandong housing and construction department, Yan Xingli, the director of international exchange and cooperation department, Chen Hengliang, the director of energy conservation science and Technology Department, accompanied to participate in the research activities; Wang jiaofa, the Secretary of the Party group and director of Weifang housing and Construction Bureau, Cui Huadong, the deputy director, Wang quanbo, the director of municipal engineering and Construction Development Service Center, Wang Zhijun, the Secretary of the Party committee, etc. attended the above activities. &Zhang Xiaohai's trip to Weifang was carried out by Shandong Provincial Department of housing and urban rural development in order to implement the relevant requirements of the provincial Party committee, promote the implementation of the contact point system of provincial leading group members, and better serve the development of grassroots and enterprises. As the contact point of Zhang Xiaohai, Changda group came to Weifang to investigate the assembly construction industrial base and demonstration projects of Weifang Changda group and the development of Changda group. This visit to the group is also a docking to have a preliminary understanding of the group.