Sinohydro. Group, Ltd. is principally engaged in project contracting, electricity investment and operation, equipment manufacturing and leasing, as well as real estate development. The Company constructs water conservancy and hydropower projects, communication infrastructure projects, municipal administration projects, industrial and civil buildings, as well as dredging and filling projects. As of December 31, 2010, the Company had 261 projects under construction in 55 countries in Asia, Africa and South America. During the year ended December 31, 2010, the Company obtained approximately 91.73% of its total revenue from its project contracting business. The Company's electricity investment businesses include hydroelectricity investment, wind power electricity investment and thermal electricity investment.