JA Solar Holdings Co., Ltd. (JA Solar) is engaged in the development, production and marketing of photovoltaic (PV) solar cells, which convert sunlight into electricity, in the People's Republic of China (PRC). Its solar cells are assembled and integrated into solar modules and systems that convert sunlight into electricity through a process known as the photovoltaic effect. Substantially all of the Company's business is conducted through the operating subsidiaries, JingAo Solar Co., Ltd. (JA Hebei), Shanghai JA Solar PV Technology Co., Ltd. (JA Zhabei) and JA Solar Technology Yangzhou Co., Ltd. (JA Yangzhou), in which the Company indirectly holds a 100% interest. JA Solar also produces and sells monocrystalline and multicrystalline solar cells.