Guang Liu

Beijing Infrastructure Investment Co., Ltd. engages in the investment and management of rail transportation infrastructures. Its business activities include planning and construction of rail transportation, asset and investment management, and development and management of real estate properties. The company was founded on February 10, 1981 and is headquartered in Beijing, China.

Digital China (China) Co., Ltd. engages in the provision of integrated information technology (IT) services. It focuses on IT infrastructure; IT planning consulting, solution design and implementation; IT system operation and maintenance outsourcing; system integration; and IT distribution and maintenance. Its business scope includes research and development of computer hardware and supporting parts; installation and maintenance of network products, multimedia products, electronic information products and communications products, office automation equipment, instrumentation, electrical and printing equipment, and computer application system; production technology products, technical services, and technology transfer; operating the production and sale of self-produced products business; sale of computer hardware, software, and peripherals; and wholesale of medical electronic equipment, medical high-frequency equipment, extracorporeal circulation and blood treatment equipment, implanted equipment, implantable artificial organs, medical hygiene materials and dressings, medical polymer materials and products, physical therapy and rehabilitation equipment, operating room equipment, emergency room equipment, medical equipment, and ward care equipment and utensils. The company was founded on April 3, 2000 and is headquartered in Beijing, China.

Part of Digital China Holdings Ltd., Shenzhou Jinxin (Beijing) Technology Co., Ltd. is a private company based in Beijing, China.

Part of Beijing Mass Transit Railway Group Co. Ltd., ERG Transit Systems (HK) Ltd. develops an automated fare collection systems technology platform. The private company is based in Hong Kong, Hong Kong.

BII Transportation Technology (Beijing) Co., Ltd. engages in the research and development of transportation system software and network technology. Its business activities include system integration, technical consultation, computer technology training, and technology development and promotion services. The company was founded on September 10, 2009 and is headquartered in Beijing, China.

Beijing Infrastructure Investment (Hong Kong) Ltd. invests in infrastructure development in China. The company is headquartered in Hong Kong.

Beijing Geek-Geek Technology Co., Ltd. provides wireless routers. The company was founded by Ding Yi and Wang Chu Yun in March 2013 and is headquartered in Beijing, China.

Part of BII Railway Transportation Technology Holdings Co., Ltd., Beijing BII Technology Development Co. Ltd. is an investment holding company that specializes in the design, implementation, and maintenance of application solutions for centralizing various functions of public transport systems. Beijing BII Technology Development Co. Ltd. is based in Beijing, China.

Beijing City Metro Ltd. constructs, develops, operates, and manages subway lines. The private company is based in Beijing, China.

Beijing Bii Zhuoyue Technology Development Co. Ltd. provides technology development services. The private company is based in Beijing, China.

Great Legend Development Ltd. provides general contraction services. The private company is based in Hong Kong, Hong Kong.

China City Railway Transportation Technology Investment is a Chinese company that specializes in the development of metro technology. The private company is based in Hong Kong, Hong Kong.

Beijing Boxing Investment Consultancy Co. Ltd. provides investment advisory services. The private company is based in Beijing, China.

Beijing Metro Science & Technology Development Co. Ltd. provides subway operation security, maintenance, and repair services. The private company is based in Beijing, China.

Beijing Metro Co. Ltd. develops and manages metro operations. The private company is based in Beijing, China.

Bii Technology Development Co., Ltd. engages in the design and sale of application solution software and the lease of civil communication transmission systems to telecommunication companies. The company was founded on January 17, 2013 and is headquartered in Beijing, China.

Beijing Jingtou Investment Holdings Co., Ltd. engages in investment activities. The company was founded on November 14, 2019 and is headquartered in Beijing, China.

Part of BII Railway Transportation Technology Holdings Co., Ltd., Beijing City Railway Holdings Co. Ltd. is an investment holding private company with interest in railway operations. Beijing City Railway Holdings Co. Ltd. is based in Beijing, China.