Light source: It applies COB LED light source, which makes heat dissipate more directly from the LED Chip to MCPCB, reducing the transaction of heat. Lighting effect reaches 80LM/W, could interchange with Standard incandescent lamps. At the same lighting effect, 5w LED Bulb Light equals 40w incandescent lamps. Appearance: All plastic structure, more safe, elegant shape, reasonable structure. We also have independent intellectual property and patent. The lamp cover adopts the opal fire PC diffusion cover, anti-glare, providing a comfortable lighting environment. The internal radiator adopts new unique chimney design concept, the blade inteval applies a professional thermal design, reducing the light body heat effectively, greatly enhancing the life span, about 10 times longer than ordinary incandescent bulb. Power supply: constant current driving power supply with functions of short-circuit, open-circuit and thermal protection. Environmental protection: It does not contain mercury and other harmful substances, neither the ultraviolet ray, no stroboscopic, friendly to the eyes, no noises which could ensure the comfort and safety when using. Application: library, home, supermarket, exhibition hall, corridor, factory, office or other indoor place.