Light-emitting diode (LED) is a kind of electrical energy into light can solid device, its structure is dominated by PN junction chip, electrodes and optical system. LED is a basic principle of the electro-optical conversion process, when a forward bias is applied to both ends of the PN junction, PN junction barrier due to the reduction of positive charge will be diffused N-P zone region, electronic N region is also to P diffusion region, the accumulation of non-equilibrium charge simultaneously formed in the two regions. Since the current injection of minority carriers generated relatively unstable, the PN junction system, is injected into the valence band holes to be unbalanced, which forms the conduction band electrons recombine phone light boxes excess energy will be light to poor energy radiation, electrons and holes the larger shelters light boxes, the higher photon energy to produce. Energy differential of different sizes, frequency and wavelength of the light generated is different, the color of the corresponding light will be different. High-power side LED products selling in light boxes, product aluminum shell rain signs light boxes, built cross-flow driven directly 220V, are free to plug, multi-series with no pressure drop, equipped with rain on the streets, lights up and down to large distances up to 3 meters, effective, uniform light effect, mounting clips and double-sided adhesive have two, for a variety of double-sided light boxes. Community light boxes, light boxes Yanshi, well-lit by far Lighting Technology Co., Ltd. Far Lighting Technology Co., Ltd. (www.ygzmkj.com) (www.ygzmkj.com) strong, credible, in Dezhou advertising lighting industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead away lighting and you work into the brilliant, for a better future!