Nanker LED Lighting is a department of Nanker (Guangzhou) Semiconductor Manufacturing Corp. engaged in semiconductor and LED lighting research, development, manufacturing, sales and services. Since 2005, Nanker LED Lighting has successfully developed LED street lights, LED factory lights, LED ceiling lights, LED tunnel lights, LED desk lamps, LED bulbs and related products. We take advantage of the world's most advanced technologies and have more than fifty patents, specializing in: World leading high voltage (100V, 300V, 400V) small LED chips integrated LED light sources. World leading low energy loss (less than2%), constant current and voltage LED drive circuits using Nanker's proprietary high voltage N-MOS depletion transistor CCS-L as low cost constant current sources. World leading spike structure aluminum radiator to solve heat dissipation problems using Nanker's directional reflection technology to achieve a 75% lighting usage factor.