China Unicom (Hong Kong) Limited is an investment holding company. The Company is an integrated telecommunications operator. The principal activities of the Company's subsidiaries are the provision of cellular and fixed-line voice and related services, broadband and other Internet-related services, information communications technology services, and business and data communications services in the People's Republic of China (PRC). The Company's mobile services consist of global system for mobile communications (GSM), third generation (3G) and fourth generation (4G) services. The Company's mobile services primarily consist of mobile voice services and mobile non-voice services. The Company offers a range of fixed-line services nationwide in China, including fixed-line broadband services and data communications services; fixed-line voice services, including local and long-distance fixed-line voice services and value-added services, and other services.