BII Railway Transportation Technology Holdings Company Limited (hereinafter referred to as "BII Technology Holdings" or "Group") is the only overseas listed company absolutely controlled by Beijing Infrastructure Investment Co., Ltd. (hereinafter referred to as "BII Company") that is directly under Beijing SASAC. It’s an industrial group company specialized in the field of urban rail transit, integrating investment and financing, technology research and development, intelligent rail transport construction, operation and maintenance. The Group was listed on the Growth Enterprise Market of the Hong Kong Stock Exchange on May 16, 2012 and transferred to main board of Hong Kong Stock Exchange on December 6, 2013 with the stock code of 1522.HK. Now BII Technology Holdings has 6 wholly-owned subsidies, 2 holding companies, 4 joint stock companies and over 300 employees.

Based on the industrial layout of "one body, two wings, duel-wheel drive" and foreign capital market of BII Company, BII Technology Holdings firmly grasped the opportunity of urban rail transit construction and development and gradually formed an industrial pattern of intelligent rail transit, civil communications related information transmission services. Based in Beijing and Hong Kong, the company boasts business presence throughout the country. The core business of the Group involves investment and financing, construction and operation and maintenance of urban rail transit, which provides a full life-cycle service for the development of urban rail transit. It is the implementation platform of BII Company to promote the development of rail transit industry.

Looking into future, BII Technology Holdings will continue to step up efforts on the R&D of product under the leadership of BII Company, comprehensively strengthen the company's management and operation, provide high-quality products and services for domestic and international urban rail transit operators and strive to build BII Railway Transportation Technology Holdings Company Limited into the leader and pioneer of China's smart rail transit.