[This Form 6-K consists of: JA Solar Achieves 18.5% Conversion Efficiency for Maple Solar Cell Technology in Large Volume Production Maple Technology Powering Modules With Higher Power Output and Reduced Installation Cost JASO SHANGHAI, Dec. 20, 2011 (GLOBE NEWSWIRE) -- JA Solar Holdings Co., Ltd. (Nasdaq: Maple technology features silicon crystals that are broader, flatter and have fewer grain boundaries]