Unlike refrigerated containers, which have a power source and controlled temperature range, insulated containers rely on their insulation properties to maintain a steady temperature throughout. This is an advantage if your goods are being shipped a relatively short distance, when no power is available, or when a regular temperature is all that’s required rather than refrigeration.
For instance, pre-cooled cargo from cold storage can be used with an insulated shipping container to maintain a cold chain very successfully on short trips,