... ,which can absorb ambient heat even in -20°C.only if external temperature difference exists, refrigerant can ... can within temperature range from -7°Cto 43°C,which means it can work not only in ... heat isolation, that temperature will not decrease over 8°C after 24 hours.5. Safety No fuel and storage ... and floor etc, full automatic control, easy operation.8. Long service life Long service life and low ...