China United Network Communications Limited, together with its subsidiaries, provides telecommunication services in the People's Republic of China. It offers broadband and mobile data services; value-added services, including text messaging, ringback tone, personalized ringback tone, caller ID, and secretarial services; and data and other internet application services, such as internet data centers, cloud computing, big data, Internet of Things, information, and communications services. It also sells communication terminals and communication products, including mobile phones and communications equipment. The company was founded in 2001 and is headquartered in Beijing, the People's Republic of China.