Workers product solar panels in the factory of Chint Group in Hangzhou, capital of east China's Zhejiang Province, Jan. 9, 2014. The Chint Group has become the largest private enterprise in the investment of photovoltaic power generation in China with the total investment of 13 billion yuan (about 2.15 billion U.S. dollars) and the photovoltaic power generation capacity of 1200 megawatts. (Xinhua/Xu Yu)