Where is Yingli photovoltaic panel manufacturer located

Over 15 GW of Yingli solar modules are deployed worldwide. In 2012, Yingli Green Energy reached a production capacity of 2,450 MW per year, making it the largest solar module manufacturer in the world in terms of module production capacity. It also became the world's leading solar module supplier by sales revenue and shipments in Q1 2012. Also in 2012, Ray Lian predicted that Yingli Green Energy was likely to become the world's largest supplier in terms of f. [pdf]