LED Ceiling Light 1,ISO,CE,RoHS,TUV,GS,UL certificate ... working life is more than 10 years.•We use high heat conductive aluminium alloy as the body material which ... the working life of the light.•We use no-imaging secondary optical lens of high light transmittance, making the lamp's ... and there is little illuminance waste.•The driver of power use universal ac voltage input, so the lamp can ...