Established on the basis of a sum of enterprises and institutions formerly owned by State Power Corporation of China,State Grid Corporation of China (short for SG) is a special large-sized enterprise approved by the State Council to operate the business of power transmission, transformation, distribution and other assets of power grid. As a pilot state-holding and authorized investing Corporation by the State Council, whose leading group of is under the administration and management of the Central Government directly, SG operates in such a manner that the president as the legal person, is responsible for all major activities. At present, there are 728 thousand staffs totally working for SG, among which 522 thousand staffs (71.7% of the total) are engaged in the field of industry, 157 thousand staffs (21.6% of the total) are engaged in the field of architecture and 14.6 thousand staffs (2% of the total) are working in the research and design institutes. £¿ Business scope: To operate all state-owned assets owned by the Corporation in accordance with state laws; To purchase and sell electricity, to dispatch and trade power among grids within service area; To invest, construct, operate and manage trans-regional transmission and transformation projects; To carry out investment and financing business both at home and abroad approved by related authorities according to state regulations; To conduct foreign trade, international cooperation, overseas project contracting and export of labor service; To engage in scientific research, technical development, power dispatching and communication as well as consulting service in power supply business; To operate other business approved by state.