LED Ceiling Light 1,ISO,CE,RoHS,TUV,GS, ... LED light is energy conservative, environmental-friendly, green and longevous. It can save more than 50% of energy than high voltage sodium lamp ... use no-imaging secondary optical lens of high light transmittance, making the lamp's efficiency more than 90%.•By ... illuminance waste.•The driver of power use universal ac voltage input, so the lamp can be put on the ...