JA Solar Holdings Co., Ltd. engages in the design, development, and manufacture of solar power products. It operates through the following segments: Manufacturing and Solar Projects. The Manufacturing segment engages in the design, development, and manufacture photovoltaic products. The Solar Projects segment operates downstream solar projects, which connects solar projects to the grid and get revenue from electricity generation. The company was founded on May 18, 2005 and is headquartered in Shanghai, China.