China Railway Construction Corporation Limited is engaged in construction of infrastructure; provision of survey, design and consultancy services; design, research and development, production and sale of large track maintenance machinery and components for railway construction; real estate development, and provision of logistics services. Its segments are construction operation, which includes construction of infrastructure, such as railways, tunnels, airports and real estate; survey, design and consultancy operations, which includes provision of survey, design and consultancy services, as well as technology and equipment research and development services, for construction of railways, airports and ports; manufacturing operations, which includes design, research and development, production and sale of large track maintenance machinery and manufacturing of components for railway construction, and other business operations comprises real estate development and logistics businesses.