[This Form 6-K consists of: JA Solar to Present at Jefferies 2012 Global Clean Technology Conference SHANGHAI, February 10, 2012--- JA Solar Holdings Co., Ltd., (NASDAQ: JASO) ("JA Solar" or the "Company"), one of the world’s largest manufacturers of high-performance solar cells and solar power products, today announced that it will present at the Jefferies 2012 Global Clean Technology Conference,]