Temperature control: Adopt microcomputer control system, temperature digital display, to ensure accurate and stable operation of the excellent refrigeration layout, the temperature inside the box is stable in the range of -15 ℃ ~ -40 ℃ precise electronic temperature control, accuracy of 0.1 ℃. Refrigeration System: International famous brand compressor, environmentally friendly and efficient hydrocarbon refrigerant, refrigeration speed, high refrigeration efficiency, low power consumption evaporator adopts heat transfer efficient copper tubes, pre-buried in the wall of the inner box, to conduction refrigeration, saving internal space international famous brand condensing fan, energy saving and efficient, mute, reliable performance of high-density heat preservation foam layer using environmentally friendly cyclopentane foaming agent, good heat preservation effect