Sieyuan Electric Co., Ltd. Originated from 1967, it is a well-known company in China (Stock code: 002028) which has been devoting in electric power technology research, equipment manufacturing and project services. So far, Sieyuan Electric has eight wholly owned subsidiaries with a wide product range covering various specialized fields of T&D technology which includes both of the primary and the secondary equipments. The main products and core technology have been reaching the leading advanced level in the world, and provide the customers with unique electrical solutions for substation.

Milestones
In 1967, Jiangsu Rugao High Voltage Apparatus factory was founded, and the main products covering Circuit Breaker, Disconnector, and Instrument Transformer.
In DEC., 1993, Shanghai Sieyuan Electric Co., Ltd. Was founded in Shanghai Jiaotong University.
In Oct., 2001, Shanghai Sieyuan Electric Co., Ltd. Moved to No. 4399, Jindu Rd, Minhang Dist., Shanghai, 201108 P. R. C.
In DEC., 2002, Shanghai Sieyuan Electric Co., Ltd. Bought Jiangsu Rugao High Voltage Electric Apparatus factory which was re-organized to Jiangsu Rugao High Voltage Electric Apparatus Co., Ltd.
In Aug., 2004, Jiangsu Sieyuan Hertz Instrument Transformer Co., Ltd. Was founded.
In Aug., 2004, Shanghai Sieyuan Electric Co., Ltd went into public in Shenzhen Stock Exchange.
In Nov., 2004, Shanghai Sieyuan Power Capacitor Co., Ltd. Was founded.
In May, 2006, Jiangsu Rugao High Voltage Apparatus Co., Ltd. Moved to No. 1 West Huiming Rd., Rugao, Jiangsu, China.
In DEC. 2006, Shanghai Sieyuan Electric Co., Ltd. Renamed Sieyuan Electric Co., Ltd.
In Jun., 2007, Sieyuan Electric Co., Ltd. Invested 400 million to set up Shanghai Sieyuan High Voltage Switchgear Co., Ltd. Specializing in GIS production.
In Nov., 2007, Sieyuan Electric Co., Ltd. Acquired Beijing Sifang Qingneng Company to establish Beijing Sieyuan Qingneng Power Electronic Co., Ltd. And Shanghai Sieyuan Hongrui Automation Co., Ltd.
In Feb., 2008, Sieyuan Qingneng Power Electronic Co., Ltd. Was founded to approach to the field of power electronics application.
In Apr., 2009, the headquarters of Sieyuan Electric Co., Ltd. Moved to a new location, and the GIS workshop of Shanghai Sieyuan High Voltage Switchgear Co., Ltd. Was put into production.