With the promotion of the National Semiconductor Lighting Engineering plan, China's LED industry has developed rapidly. Since 2017, the LED display screen industry has emerged a lot of new weather. The Rise of the small-pitch LED screen market, the recovery of the stage rental screen, the opening of the LED transparent screen application market, the opening of the market segment, sweep away the haze of homogenization competition in the past and inject new vitality into the industry. From the perspective, the LED industry is in a period of steady development. At present, the LED industry can be divided into four major regions. First, Europe and the United States, with general lighting as the main direction, the product features high reliability and high brightness. The second is Japan, which has both general lighting and backlight display technologies, and also takes into account general lighting, automobiles, mobile phones and televisions. Third, Taiwan and South Korea, with backlight display as the main line, including mobile phones, TV, computer backlights, large shipments but low gross profit margin. The fourth is mainland China, whose main businesses are outdoor display screens, advertising screens, lighting lamps and other fields. The LED market maintains a rapid growth trend. The main growth comes from the explosive growth of indoor general lighting, architectural lighting, landscape lighting, backlight and outdoor LED large screen. In the next 3- In the past 5 years, with the maturity of technology and the decline of cost, the market penetration rate of LED in the field of general lighting will further increase. and the continued expansion of applications such as automotive lighting and small-pitch LED displays is expected to usher in a new round of LED industry. According to the data of 'analysis report on market outlook and investment strategy planning of LED industry' released by prospective Industry Research Institute, the penetration rate of LED lighting in 2016 is around 31. it is estimated that the LED lighting market will reach 40. 4 billion US dollars in 2017, with a penetration rate of 37. It is estimated that 2017- In 2021, the annual compound growth rate of LED lighting was 12. LED lighting market scale data