Huayi Electrical Apparatus Group Co., Ltd. (hereinafter referred to as HEAG), was founded in 1986, was promoted to a group company in 1997. HEAG now has become an inter-province, inter-industry enterprise group comprised of 7 core subsidiaries, 5 joint venture companies and over 100 member enterprises, which centers on wind power and high voltage apparatus, and diversifies into areas such as low voltage apparatus, real estate, chemical industry and tertiary industry. The company is national designated manufacturing enterprise of L.V. & H.V. switchgear and the key hi-tech enterprise listed in State Torch Project, also ranks China's Top 500 Private Enterprises, China's Top 500 Enterprises in Machinery Industry, China's Top 100 Growth Enterprises, China's Top 100 Enterprises in Electric Industry, China's Top 10 Leading Enterprises in Electric Apparatus Manufacturing, etc. It mainly produces 252kV and below switchgears, automation distribution switches and terminal devices, high voltage switch components, static energy meters, wind power equipments and so on. Hereinto, outdoor high voltage vacuum circuit breakers are recommended as "National Key Promoting New Products" by the former Power Ministry, its market share in China is above 25% and its production and sales continuously have been No.1 in the domestic market for seven years. On Feb. 1st, 2007, one of HEAG's core subsidiaries, Huayi Electric Co., Ltd. successfully got listed on Shanghai Stock Exchange, and became the first private enterprise listed on the Main Board in Wenzhou city.