China Communications Construction Co Ltd (CCCC), a subsidiary of China Communications Construction Group Ltd (CCCG), carries out the design and construction of transportation infrastructure. Its business portfolio includes infrastructure construction, infrastructure design, and dredging. In infrastructure construction, CCCC is involved in the investment, design, construction, operation, and management of ports, roads, bridges, railways, urban rail transit, municipal infrastructure, land reclamation, river basin management, water conservancy, and environmental protection projects. The infrastructure design business encompasses consulting and planning services, feasibility studies, survey and design, engineering consultancy, project management, and more. The dredging business involves infrastructure dredging, maintenance dredging, environmental dredging, reclamation, and watershed management. CCCC also operates in other sectors, including equipment manufacturing, centralized procurement of materials, and financial industry support. It serves a diverse range of customers, providing integrated solutions throughout the full lifecycle of infrastructure projects. The company operates extensively across all provinces, autonomous regions, and municipalities in mainland China, including Hong Kong and Macao, and has a presence in 139 countries and regions worldwide.

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CCCC has established a R&D framework centered on technological innovation as a core driver of its development. The company has developed a 'three levels and four categories' innovation platform system, achieving full coverage of the innovation chain from basic research to achievement transformation. The company has made significant technological breakthroughs in areas such as super-large-span bridges, deep-water tunnels, and smart transportation models. It has developed engineering equipment and a modern equipment cluster, enhancing its capabilities in marine engineering, deep-sea resource development, and polar channel dredging. The company is also focusing on strategic emerging industries such as smart highways, intelligent ports, and offshore wind power. CCCC has four national-level R&D innovation platforms and employs an R&D workforce of 33,000 professionals. These units are responsible for driving the company's R&D activities, focusing on technological advancements and innovation across various sectors. The company holds 40,851 authorized patents. It has led or participated in the formulation of 768 national and industry standards. In FY2025, the company spent CNY25.0 billion on R&D, which as a percentage of total revenue stood at 3.4%.