Main business: Imp. & Exp. of goods and technology, engineering consulting, design of water conservancy,hydroelectricity engineering & municipal public engineering, building material sales, engineering equipment sales,electricity sales, hydroelectricity technology development, R&D,sales and technical services of hydro generator sets, auxiliary equipment and hydroelectricity equipment, Inst.& Const. services of EM. equipment, hydroelectricity projects, business information advisory services , electrical equipment installation and maintenance.