Rugao High Voltage Electric Factory was established, which is a stated owned company.

Shanghai Sieyuan Electric Co., Ltd. was founded in Shanghai Jiaotong University.

The company moved to the new address: No.4399, Jindu Road, Minhang District, Shanghai.

Jiangsu Rugao High Voltage Electric Apparatus Plant which was founded in 1967 restructured and set up Jiangsu Rugao High Voltage Electric Apparatus Co., Ltd.

AUGUST 2004: Jiangsu Sieyuan Hertz Instrument Transformer Co., Ltd. was founded. 

AUGUST 2004: Listed in Shenzhen Stock Exchange successfully (stock code: 002028).

NOVEMBER 2004: Shanghai Sieyuan Power Capacitor Co., Ltd. was founded.

MAY 2006: Jiangsu Rugao High Voltage Electric Apparatus Co., Ltd. moved to the new address: No.1, Huimin West Road, Rugao, Jiangsu.

DECEMBER 2006: The company was renamed as Sieyuan Electric Co., Ltd.

JUNE 2007: The company invested RMB 400,000,000 to establish Shanghai Sieyuan High Voltage Switchgear Co., Ltd. and implemented the gas insulation metal-enclosed switchgear (GIS) project. 

NOVEMBER 2007: Beijing Sifang Qingneng Co., Ltd. was acquired, and Beijing Sieyuan Qingneng Power Electronic Co., Ltd., and Shanghai Sieyuan Hongrui Automation Co., Ltd. were founded.

FEBRUARY 2008: Sieyuan Qingneng Power Electric Co., Ltd. was established so as to enter the energy-saving product fields based on high-power electrics and electronics technology.

APRIL 2009: The headquarters of Sieyuan Electric Co., Ltd. was moved to the new address, the GIS new plant of Shanghai Sieyuan High Voltage Switchgear Co., Ltd. was put into operation.

AUGUST 2012: The company optimizes the organization, establishes the systems such as “Strategy & MKT, sales and service, R&D and supply chain and strides forward the objectives “R&D marketization, process normalization, market internationalization and operational intensification”.

MARCH 2013: The company obtains the EPC turnkey qualification, the newly-increased orders of the whole year breakthrough RMB 5,000,000,000, wherein the overseas orders break through RMB 340,000,000.

JANUARY 2014: The sales and service system organization is further optimized, sales representative offices are established abroad and in domestic provinces and cities so as to further press close to the customers and better implement the operation principle “Customer-oriented”. 

OCTOBER 2014: The new plant of Sieyuan Hongrui was put into operation, and the substation automation system products realize more professional research, development and production.

AUGUST 2015: The “Islamabad New International Airport 145kV Substation Project” in Pakistan succeeded in power transmission, and the first overseas turnkey project of Sieyuan Electric Co., Ltd. was delivered smoothly.

MARCH 2016: Sieyuan Electric Co., Ltd. became the first batch of member units of the global energy internet cooperation organization and contributed smart and strength for the global energy internet. 

APRIL 2016: The company established new business preparatory group such as charging piles and supercapacitors and constantly enriched the product line according to the customers’ requirement.