Guang Li Guo

Datang Telecom Technology & Industry Holdings Co. Ltd. engages in the research and development of telecommunication equipment. The private company is based in Beijing, China. The Chinese company is ultimately controlled by the Government of China.

Beijing Tianma Intelligent Control Technology Co., Ltd. engages in the research, development, production and sale of coal mine unmanned intelligent mining control technology and equipment. It provides systems of automatic mining, systems of shield automatic controlling, systems of automatic pumping, related spare parts, and operation and maintenance services. The company was founded on July 17, 2001 and is headquartered in Beijing, China.