Founded in 2008, Shenzhen Shanling Technology Co., Ltd. is mainly engaged in the R&D and production of automotive electronic products such as early warning radar, GPS early warning instrument, navigation, vehicle audio and video equipment, driving recorder, etc., and is one of the earliest manufacturers in the industry to pass the quality inspection of the Ministry of Public Security. From 2008 to 2010, the DSA system established by Shanling became China's first navigation and early warning brand software, and 80% of the manufacturers in the industry are currently using Shanling driving safety early warning data system. The appearance of the radar detector is mostly a car model, and there is still a gap between the radar signal detection and early warning performance compared with the international first-line brands, and the early warning distance is shorter, and the situation of underreporting also occurs from time to time, and the price is relatively low, between 200-800 yuan.