C&D Holsin Engineering Consulting Co., Ltd. (SH.603909), controlled by C&D International Group, is the comprehensive engineering consulting group and a national high-tech enterprise listed on the Shanghai Stock Exchange. It has formed six major businesses, including exploration and design, construction, project management, test and detection, comprehensive management and maintenance, and engineering new materials. It mainly focuses on housing construction, municipal, rail transit, highway, bridge, tunnel, water transportation and other engineering fields. It provides customers with comprehensive, cross-stage integration of project lifecycle management consulting and technical consulting services.