Hubei three ring development company limited. established Yu 1992, is a in power electronic technology platform Shang, professional engaged in high pressure frequency Manager, and no Gong compensation device, and has source filter, high-tech products development, and production and sales of national high-tech enterprise and the double soft enterprise, while is first is national development and Reform Commission and finance, and national Ministry double finds of energy saving service company.

three-ring – of development is located in the national independent innovation demonstration zone in Wuhan East Lake high-tech development zone, covers a total area of more than 70 acres, has built nearly 50,000 square meters of modern production research and development base, average 2000 custom production and service capabilities. the company has a staff of nearly 300 people, including master, Dr Kochi's expertise and enjoy special allowance of the State Council of industry experts, and they use domestic leading level of management and scientific production specifications, effective protection of the three-ring product of advanced technology.2006 year, three circles development commissioned by the Federation of Chinese power, presided over the enactment of the fan water pump with high voltage inverter in thermal power plant of the power industry, and with the national development and Reform Commission for approval.

after more than 10 years of concentrated development, three ring company for from both at home and abroad hundreds of home user production and provides has high performance of SH-HVF series high pressure frequency Manager and SH series no Gong compensation device, these products are broad application Yu power, and metallurgical, and petrochemical, and building materials, and nonferrous metals, and municipal, important industry area, for user improve workers condition, and optimization technology, and energy saving consumption, and Made outstanding contributions, such as environmental protection and emission reduction. by the end of 2011, three-ring of development have been sold since the total installed capacity of high voltage frequency converter 200yuwanqianwa, high voltage reactive power compensation installation with capacity of 30yuwanqian spent, equivalent to an annual electricity savings of about 4.8 billion, equivalent to about 1.61 million tons coal equivalent, equivalent to planting more than 2.6 million trees.

as Executive Member unit of China energy industry Services Committee, Wang many times on behalf of the company in China to participate in international exchanges, won several special energy-saving funds of the World Bank loan, the company is investing in energy-saving projects by the World Bank as SCR, award-winning international awards. at the same time, three ring engaged in energy-saving projects with the support of the World Bank's development as well as energy management contract (EPC), and with professional qualification (EMCo), through energy management contract with clients to achieve win-win situation, using units with energy saving, finance, transformation of a full range of professional services. the company shares of wind power and the development of clean energy projects and investments for the company products access in wind power system of entry laid the Foundation.

sanhuan development will continue adhering to the "advanced technology, industry-oriented" business philosophy, and fully integrating quality resources, support and promote the development of China's energy-saving industries, and strive to become a world-class comprehensive energy-saving electric power electronics product manufacturer and service contractor, to provide customers with great value energy saving services.