... newest green,energy saving and environmental protection light source;developed by Shandong Blessed Huihuang PV ... Ltd and Zaozhuang College, is the first light source with highest luminous flux,luminous efficiency,energy ... efficiency: No more than 50% in other light source,20% in LED,that is to say only 20 ... But in the same height(85W saving lamp), is only 4.41LUX.4,Monochromatic light: The light wave ...