Hi, We are Shenzhen ken try co.,ltd..We Supply kena LED Tunnel Lights KN570 TL. SHEN ZHEN KENA INDUSTRY CO.,LTD. 86-0755- ken Use two units of single powerful LED (40-70W) as the light source , using our proprietary LE psulation. Utilizes the special design of multichip single module. Imported high brightness semiconductor chips. High heat conductivity, lo decay, pure light color, and no ghosting. The LED is closely connected to the surface. The heat from LED is removed through the heat dissipation wing and also by the air ventilation. The design ensures a 50,000 hours life-span for the LED..