File photo taken on July 23, 2013 shows that workers of Central Brazil Operation and Maintenance Center of State Grid Brazil Holding carry out routine inspections of an electrical substation in Luziania, Brazil. State Grid Brazil Holding, a subsidiary of China's State Grid Corporation which was established in July 2010, focuses mainly on the power transmission and conversion in Brazil. China is taking a leading position in strategic hi-tech sectors. It will enhance strength in science and technology in the coming years to create more opportunities for itself and the world. (Xinhua/Weng Xinyang)
