Global Link Communications Holdings Limited is an investment holding company that develops, produces, sells, services, and operates train information system solutions in the People's Republic of China and Hong Kong. Its offerings include train-borne closed-circuit television systems, on-board public address systems, train-borne passenger information display systems, LCD passenger information displays, and railway transit passenger information display and train-borne passenger information system solutions. The company also develops telecommunication application software, urban rail transit (URT) video surveillance and radio system solutions, intelligent video surveillance systems, value-added telecommunication service systems, and large-scale call center and broadband telecommunication systems, along with technology products and integrated solutions. In addition, it provides spare parts and accessories, system software and hardware upgrades, technical support, system solutions, product support, operating after-sales and customer relationship management services, and holds software rights. It serves city metro operators, train vendors, URT integrators, backbone telecommunication operators, value-added services providers, digital TV network operators, other network operators, client service centers, and information management agents. Founded in 1998, the company is headquartered in Hong Kong.