(EnergyAsia, August 2, Thursday) — NYSE-listed Yingli Green Energy Holding Company Limited, a leading vertically integrated photovoltaic (PV) product manufacturer in China, said it has signed another long-term agreement to supply polysilicon to Wacker Chemie AG of Germany from 2010 through 2018. The total amount supplied will allow Yingli Green Energy to produce 400MW of…