Hanjia Digital Intelligence Science and Technology Group Co., Ltd., together with its subsidiaries, provides urban governance, design and consulting, and EPC general contracting services in China. Its offerings include urban operation management platforms, urban lifeline engineering, smart water and water conservancy solutions, and technical support such as AI middleware, a large model platform, and data infrastructure, along with multi-source data acquisition, governance, application, and assetization solutions. The company also provides urban governance robot solutions for waste sorting, sanitation and cleaning, urban inspection, and solid waste sorting, as well as urban sanitation and waste sorting services. Its design services cover planning, architecture, municipal utilities, environmental sanitation, landscape architecture, gas and heating systems, interior and exterior decoration, geotechnical engineering, river management, intelligent systems, curtain walls, and floodlighting, plus industry development plans, feasibility studies, application reports, project evaluations, post-evaluations, full-process consulting, and construction drawing review. It also undertakes EPC turnkey projects in construction, municipal engineering, environmental sanitation, decoration, and landscape engineering. Formerly Hanjia Design Group Co., Ltd., it changed its name to Hanjia Digital Intelligence Science and Technology Group Co., Ltd. in January 2026. Incorporated in 1998, it is based in Hangzhou, China, and operates as a subsidiary of Zhejiang Chengjian Construction Group Co., Ltd.