(EnergyAsia, October 6, Monday) — Nanjing-based China Sunergy said it has signed a seven-year sales agreement with Wuxi Guofei Green Energy Source Co Ltd, a Chinese solar energy company. China Sunergy will supply Wuxi Guofei with 10 MW of monocrystalline cells per year from 2009 through 2015. China Sunergy said it will receive an advance…