Regarding the question you asked, many large decoration shops on the market now have agency brands, and the ordinary gps is only a few hundred yuan, the kind that is sucked on the windshield with a shelf. If it is an all-in-one machine, I have seen an all-in-one machine of CAST dvd, navigation and reversing image. The price of infrared camera is around 4000-5000 yuan, which is customized for different models. It is specially designed for special vehicles and can be installed and used absolutely. Personally, I feel that this brand has a good cost performance.