... High efficiency ,noiseless; 4.Longlife. 2U Energy Saving LampFeature 1.With excellent energy saving, 80% energy saving; 2.High luminous efficacy and ... phosphor to guarantee the high light effect and improve the energy saving capacity. Application:House,hotel,office,garden,passage,mall, ... installing on the unstable screw lampholders;Not suitable for dimming. 2012 High efficiency 2U energy saving lamp