... span up to 50.000 hours3)Led source: 3528 SMD LEDs.4)Heat dissipation: two sides and back plate.5)Easy Installation ... be made with dimmable function Application:Places where energy saving and high color rendering index lightings required,such asSupermarket,Hotels,Factories ... ,Office,Commercial buildings,Schools,colleges,Hospitals, Shoppingmall,Metro station and Warehouse. LED 30W Panel Lamp