Synertone Communication Corporation, together with its subsidiaries, researches, develops, manufactures, and sells mobile satellite communication systems in Hong Kong, China, Macau, and internationally. It operates through four segments: Building Intelligence, Control System, Data Centre, and Smartphone Distribution. The company offers Synertone 1, a broadband satellite providing high-throughput satellite resources and services, as well as ground satellite products including mobile and fixed network elements. It also develops and sells intelligent systems such as video intercom and surveillance systems, smart home automation systems, automation hardware and software, information systems platforms, and industrial monitoring and scheduling management solutions. Additionally, it provides rental and maintenance services for computer equipment and machines, IT infrastructure and platform and robot services, and distributes smartphones under the Xiaomi brand, ecosystem products, and related equipment. Its products serve railway, shipping, education, oil and gas, healthcare, LTE backhaul, rural connectivity, emergency, and fire surveillance industries. Founded in 2001, the company is headquartered in Tsim Sha Tsui, Hong Kong.