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"China Building Materials Network" foreign products are generally exhibitors, such as GE, ORSAM, etc., domestic brands, crystal lattice, Grand Canyon Optoelectronics, Wei Yideng and so on. Compared with neon, LEDs in this exhibition occupy a relatively large proportion. This shows the fiery degree of the domestic LED market. LEDs from display to lighting and lighting have not been in a few years, factories, businesses, media together, LED lighting in the absence of a recognized brand, the price war started in advance. Earlier this year, the 6th Annual Lighting Strategy Symposium was held in San Francisco with the theme of high-brightness LEDs. More than 340 participants listened to the speeches of 23 leaders from the high-brightness LED industry. The US high-brightness LED market in 2004 increased by 37 from 2003 to reach $3.7 billion. The logo ranks second in the LED market application and has a market share of 13. In 2004, the proportion of high-brightness LED market applications in the United States was as follows: the first place is the application of electronic digital products, including (PDA, telephone, camera, etc.), and the second is the logo and automotive industry, respectively, 13, fourth The position is other applications 9, the fifth is lighting 5. The sixth is the signal product 2. Compared with the accurate survey data of the US market, there is currently no investigation report in this area in China, but the LED's strong momentum in lighting can be said to be sharp. Unstoppable, compared to the LED market of basically saturated electronic digital products, sports, retail and logo, will be an important force to promote the development of high-brightness LEDs in the future. LEDs have changed the way logos are designed. In less than a decade, LEDs will affect the classification of charged signs. The application of high-brightness LEDs in channel type and architectural lighting is increasing. Red LEDs dominate the channel type, and the remaining color LEDs are also greatly improved in brightness and power. The growth of slotted word illumination in the future will depend on transistor illumination. As the market demand increases, LED will not simply replace the existing lighting methods such as incandescent lamps, neon lights, etc., but attract more users with reasonable design costs. With the rush of the market, as a consumer, LEDs still need to be calm, scientific analysis, select the best cost-effective light source and lamps, the following describes the basic performance of several LEDs, to give readers a reference. 1. The brightness of the brightness LED is different and the price is different. LEDs for LED luminaires shall comply with the laser class I standard. 2, anti-static ability Anti-static ability of the LED, long life, and therefore high price. LEDs with an antistatic greater than 700V are usually used for LED lighting. 3. LEDs with the same wavelength and wavelength have the same color. If the color is consistent, the price is high. It is difficult for manufacturers without LED spectrophotometers to produce pure color products. 4. Leakage current LED is a unidirectional conductive illuminator. If there is reverse current, it is called leakage, and LED with large leakage current has short life and low price.