Carrefour shows that the high efficiency, high growth and high return of science and technology are centered on modern and scientific management. While responding to the call of the party and the state for energy conservation, Carrefour has passed ISO9001, ISO2000 and other series of international quality standard certification, as well as FCC, CE of the European Community and UL of the United States. The enterprise has established an effective risk prevention mechanism and a standardized internal control system. The company has a talent incentive mechanism full of wisdom and a perfect staff training and education system to create a positive corporate culture, so that all kinds of talents can be organically combined and harmonious. At the technical level, it cooperates with Toshiba, Philips, Siemens and other companies, has world-class video control and drive technology, and all products are modular designed. The chip cooperates with American Cree, Dalian Lumei and other manufacturers; Carrefour display technology has gathered a group of professional technical and management personnel in the LED industry, providing strong technical and management guarantee for continuously improving the technology and quality of products. The products have been widely used in advertising, bars, airports, stations, ports, gymnasiums, banks, schools, factories, posts and telecommunications, shopping malls, hospitals, shops, industry and commerce, taxation, customs, monitoring centers and other fields