Cold chain truck refrigeration systems—commonly known as transport refrigeration units (TRUs)—are designed to preserve cargo integrity by maintaining consistent temperatures from loading to delivery. These systems are essential for preventing spoilage, ensuring regulatory compliance, and protecting public health. As demand for fresh and safe products continues to rise, refrigerated trucks have become indispensable across industries. They support everything from urban distribution to long-haul transportation, forming the backbone of modern cold chain logistics.