The core is equipped with an efficient on-board dedicated refrigeration unit, which supports the selection of domestic or imported units with equivalent power from other manufacturers. It can also be equipped with Kelly 350D and other models of units. The refrigeration temperature can reach -15 ℃, flexibly covering the needs of freezing and refrigeration in all scenarios. It can not only achieve the preservation and refrigeration of fruits, vegetables and dairy products, but also complete the low-temperature transportation of small frozen goods, adapting to the diversified needs of short distance cold chain transportation. The refrigeration system operates stably and is equipped with original chassis dual compressor brackets, enlarged generators, and dual belt designs to ensure continuous and stable power supply for the refrigeration unit. It has high cooling efficiency and can quickly reach the set temperature and maintain a constant temperature, effectively locking in the freshness of goods and avoiding deterioration caused by temperature fluctuations during short distance distribution. At the same time, it also considers energy efficiency and meets the economic needs of small cold chain transportation. The refrigerated compartment adopts a fully sealed sandwich composite structure with excellent insulation performance, which can effectively block external temperature conduction, reduce refrigeration energy consumption, and ensure constant temperature inside the compartment during short distance distribution. It belongs to the category of F-class refrigerated trucks. The inner and outer wall panels of the cabin are made of fiberglass material, with a high-density polyurethane insulation layer filled in the middle. The bottom plate material is patterned aluminum plate+twelve plywood+polyurethane+thermoplastic plate (thickness 100mm), and the other side panels are 75mm thick, with excellent sealing performance; When the curb weight is 2000kg, the weight of the cargo box is 730kg, and when the curb weight is 2195kg, the weight of the cargo box is 925kg. The structure is sturdy and durable. The bottom of the carriage is equipped with aluminum alloy anti slip patterned plates, which are easy to clean and anti slip and wear-resistant. The door edge strips are designed with tight sealing and matched with stainless steel door locks to completely prevent cold air leakage. The top of the carriage is closed and cannot be opened, further enhancing the insulation effect. At the same time, internal air ducts, ventilation nets, card slots, and meat hooks can be optionally installed according to needs to meet different cargo transportation needs.