Nanker Group is established in 1989,whose main business areas are R&D,production and sales of integrated circuits,silicon polish wafers,led lighting fixtures and lamps. Our led products include led street lights,tunnel lights,flood lights,led high bay lights,led down lights,led fluorescent tubes ,led bulbs and reading lamps. Our products have the following advantages: 1. The world first use of series high voltage (300 or 400V) light source using VLSLLC packaging technologies 2. The world first high voltage constant current source devices and a driving circuit with both constant voltage and current features. 3. The world first spike-like heat sink structure used in LED lights4.The company uses optical lens to improve the effective usage of light sources to more than 70% and light uniformity to achieve more than 0.6. Our products have the following characteristics:1.High voltage low current,low power dissipation and long endurance2.Radiator with columnar to dissipate heat from all directions3.High quality,low temperature rise and low light decline4.Energy-saving and environment friendly. Our products have got CE and UL certificate,we have got more than 40 patents in China,we can provide 2 years free guaranty. With high quality and good price,our products have far sold to Europe, US,and Southern American countries.