Guodian Nanzi was exclusively initiated by Nanjing Electric Power Automation Equipment General Factory of State Power Corporation, and it is planned to be established by public offering. The shareholding system reform of Nanzi General Factory has transformed the assets and liabilities of its existing four major branches: line protection branch (No.1 branch), dispatching automation branch (No.2 branch), main equipment protection branch (No.9 branch), transformer printed board branch (No.7 branch) and corresponding functional management departments, as well as a wholly-owned subsidiary (Nanjing Boao Electric Power Automation Company) and a holding subsidiary (Nanjing Nanzi Substation Automation Co., Ltd.).
Guodian Nanrui Technology Co., Ltd. was established on February 28th, 20001year. Nanjing Nanrui Group Co., Ltd. as the main sponsor initiated the establishment, reorganized the assets of three subsidiaries of Nanjing Nanrui Group Co., Ltd., and co-sponsored with seven other strategic investors. On September 24th, 2003, it was listed on Shanghai Stock Exchange, referred to as "Guodian Nanrui". The company is now a listed company under the State Grid Corporation of China, and completed the share-trading reform in 2006.