The materials and manufacturing technology of automotive air conditioner radiator have developed rapidly. With its obvious advantages in material lightweight, aluminum radiator has gradually replaced copper radiator in the field of cars and light vehicles. At the same time, copper radiator manufacturing technology and process have made great progress. Copper brazing radiator has obvious advantages in passenger cars, construction machinery, heavy truck radiator, etc. Most of the radiators for foreign cars are aluminum radiators, mainly from the perspective of environmental protection. Among new cars in Europe, aluminum radiators account for an average of 64%. From the perspective of the development of automobile radiator production in China, the aluminum radiator produced by brazing is gradually increasing. Brazed copper radiators are also used in buses, trucks and other engineering equipment.