LED letters is very popular in Europe. LED Signs combine the brightness of neon, the efficiency of LED, and the versatility of movable type. It has stereoscopic appearance. LED luminous word is combined with modern manufacturing technology and modern lighting technology that identifies products as a whole. It is the appearance of text or logo form, is installed in the roof of buildings or walls, both during the day marking the performance results, but also the use of LED as a special light source, give full play to the performance of LED power at night, is the most important corporate identity system, one of the options. Brilliant colors, vivid patterns, dazzling lighting LED luminous characters widely used in the construction buildings, hotels, supermarkets, shopping malls, airports, hospitals etc.