China United Network Communications Group Co., Ltd. or China Unicom is a Chinese state-owned telecommunications operator of China. China Unicom is the world’s fourth-largest mobile service provider by subscriber base.
China Unicom (Hong Kong) Ltd. is an investment holding company. The company through its subsidiaries engages in the provision of cellular and fixed-line voice and related value-added services, broadband and other Internet-related services, information communications technology services, and business and data communications services. The company operates through two segments: Mobile and Fixed-Line. The Mobile segment provides global system for mobile communications, and wideband code division multiple access cellular and related services. The Fixed-Line segment offers fixed-line telecommunications and related services, domestic and international data and internet related services, and domestic and international long distance and related services. China Unicom (Hong Kong) was founded on February 8, 2000 and is headquartered in Hong Kong.