The power supply equipment manufacturer of Anshan Research and Deslgn Institute of Electrostatic Technology is a specialized one, which produces high voltage silicon rectifier power supply for electrostatic precipitator. It has a history of over twenty years of producing this kind of power supply and low voltage programme control equipment. For many years, it, depending on technical superiority, has unceasingly digested advanced technologies at home and abroad, imported Japanese model machines and control softwares twice, and on the basis of the technologies imported and considering the conditions of our country,developed new-generation digital high voltage power supply controlled by computer. The products are made wholly according to Japanese process with their technical performence coming up to the leading level of the similar kinds of products at home, have widely been used by many large-and-middle-sized enterprises, such as Anshan Iron and Steel Complex, Baoshan Iron and Steel Complex, Benxi Iron and Steel Complex, the Heat and Power Plant of the First Automobile Manufacturer and Baoding Power Plant, etc. in such industries as electricity generation, metallurgy and building materials, and exported to Japan, South Korea, Phillippines,and the countries of Southeast Asia. The new-generation digital high-voltage power supply has earned favorable comment from many customers through its practical application in production. Because the efficiency of the electrostatic precipitator has been obviously improved, it has gained a high praise by the customers at home and abroad.