Shandong full color light emitting diode polarity two leads in the longer one is positive Full Color prices, should be connected to the positive supply. Linyi LED light-emitting diode display, some as long as two leads hotel full color, full color Linyi but there is a projection of full color on the envelope uvula, Shandong LED display is positive lead near the uvula. LED Disadvantages: high initial costs, poor color, high power LED inefficient Shandong full-color, constant-current drive (need special driver circuit). In contrast, Linyi LED display a variety of traditional lighting there are some flaws. Incandescent: low electro-optical conversion efficiency (about 10%), short-lived (LED display around 1000 hours), the heating temperature is high, a single color and color temperature is low; Fluorescent: Shandong monochrome screen electro-optical conversion efficiency is not high (about 30%) harm the environment (mercury and other harmful elements, about 3.5-5mg / only), non-adjustable brightness (Shandong LED display low voltage unable starter light), ultraviolet radiation, flicker, slow start, rare earth raw material prices (fluorescence Powder accounting cost share from 10 per cent to Jiangsu full color 60 ~ 70%), repeatedly switch affect life; bulky. Outdoor full color, Weihai full color, Yasuhiro photoelectric provided by Linyi Hong Thai Electronics Co., Linyi Wang Tai Electronics Co., Ltd. (www.ledzkd.com) (www.ledzkd.com) strong, credible, in Linyi display equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Hong Thai Optical into the brilliant and you work for a better future!