... more than 50,000hrs life span square 600x300mm LED Panel Light 21.5W with CE&RoHSFeatures:Energy saving up to 50%, even ... efficiency constant current driverSpecial circuit design, each group of LEDs work separately, avoiding any problem of lighting output caused ... Holan Technology Co., Ltd. specializes in supplying LED lamps and components, including LED tubes and bulbs, spot lights, ceiling lights, ...