Chip On Board lighting engine，A high watt,high brightness light source LED module,for more heat-condution and the best cost .the engine series mainly use aluminum material which has excellent performance on the heat-disspation .it can help reduce heat resistance.we have several kinds of wattage for different kind of LED lights ,including street lamp,street lights,floodlight,commercial lighting used spotlight,and so forth.it can speed up replace filament lamp,halogen lamp, and fluorescent lamp and so forth traditional lamps.