Yingli Solar is a vertically integrated manufacturer of solar photovoltaic modules. Under one roof they manufacture their ingots, wafers, cells and modules. This ensures that Yingli can tightly control their material and production quality, offering their customers leading product durability and sustainable performance backed by Yingli Solar's 25-year limited power warranty*.
Yingli, through its principal operating subsidiary in China-Baoding Tianwei Yingli New Energy Resources Co., Ltd., designs, manufactures and sells PV modules, and designs, assembles, sells and installs PV systems that are connected to electricity transmission grids or those that operate on a stand-alone basis.
Yingli is currently one of the largest manufacturers of PV products in China as measured by annual production capacity, with an annual production capacity of 400 megawatts of polysilicon ingots and wafers, 400 megawatts of PV cells and 400 megawatts of PV modules, as of September 2008.
