京投轨道交通科技控股有限公司（简称“京投交通科技”）是北京市国资委直属企业—北京市基础设施投资有限公司（简称“京投公司”）绝对控股的境外上市公司，专注于城市轨道交通领域，是一家集投融资、技术研发、智慧轨道交通建设及运营维护于一体的产业集团公司。京投交通科技于2012年5月16日在香港联交所创业板上市，并于2013年12月6日转为香港联交所主板上市，股份代码为1522.HK。

京投交通科技及其附属公司（统称“本集团”）的核心业务涉及城市轨道交通建设的投融资、建设及运营维护，构建了为城市轨道交通建设提供全生命周期服务的产业模式，是卓越的智能轨道交通供应商。

         BII Railway Transportation Technology Holdings Company Limited (hereinafter referred to as "BIITT" or the "Group") is the sole overseas listed company with a controlling stake owned by Beijing Infrastructure Investment Co., Ltd. (hereinafter referred to as “BII Company”) that is directly under the State-owned Assets Supervision and Administration Commission of the Peoples Government of Beijing (‘SASAC’).  Our Group specializes in the field of urban rail transit, integrating investment and financing, technology research and development, intelligent rail transport construction, operation and maintenance. BIITT 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.

          The core businesses of BIITT and its subsidiaries (collectively referred to as "the Group") cover investment, financing, construction, operation and maintenance of urban rail transit construction which constructs the industrial mode to provide lifecycle services for urban rail transit construction.BIITT is the excellent supplier of intelligent rail transportation.