1.CE, RohS certification 2.Good luminous efficient 3.High luminus flux 4.3 -year warant 5.LED constant current source Features:1 ... use of high-strength aluminum alloy made though precision turning.3. Color: sand siver, satin, black, white, etc.4. Appearance of ... , counters, hotels,KTV lighting decorative, etc. 1*3W led ceiling lamp of 3 years warranty