As a qualify LED components manufacturer and a well-know Hi-tech company, we established in 1997,specializing in LED lamps, dot matrix, clusters, numeric & alpha display, back lights, modules and all kinds of moving message sign, traffic light and video wall series. In addition, your special design and OEM projects are also welcome. Ditelong, who has been certified by ISO9002, CE and applying for UL. With nearly 30 engineers R&D team, led by our G.Manager Mr.Kim, who has almost 20 years experience as a engineer in LED industry, enable us to offer our clients the right product and good service, and keep them one step ahead of the competition both at home and aboard. On quality control, including the chips selection, imported sealant, housing design, PCB design, encapsulation and burn in test all are done by ourselves. We source our main components, praticularly Chip and LED lamps from Nichia, Toyota and Cree.