B23 five-section mechanical thermal insulation locomotive consists of 1 mechanical cooling generator locomotive and 4 mechanical cooling freight locomotives. The advantages of mechanical heat preservation vehicle over refrigerator heat preservation vehicle are as follows:

-The whole vehicle can maintain the specified temperature and humidity uniformly, which is easy to adjust and control, and can fully guarantee the quality of goods transportation;

-There is no need to add ice and ice equipment in operation, which saves money, speeds up vehicle turnover and reduces transportation costs;

-It is not limited by the length of transportation distance and the stopping time of vehicles during transportation, which can ensure the safe delivery of goods.

BSY four-section refrigerated panel heat preservation vehicle set is a new type of special vehicle for transporting perishable goods, which consists of three trucks and one vehicle with cabin. The vehicle group uses ground refrigeration equipment for refrigeration, and "fills" the container filled with refrigerant (namely freezing plate) on the top of the vehicle, so it is called freezing plate heat preservation vehicle. Each truck has 14 freezing plates. When the temperature in the car is kept below-180℃, it can run continuously for 100 hours ... The car is also equipped with a thermostat, and the temperature in the car can be adjusted within the range of-12℃ ~+5℃.