Cryopreservation box a kind of can refrigerate, preservation of items normal low-temperature preservation box. Applicable to scientific research institutes, electronics, chemical and other enterprises laboratory and livestock system cryopreservation box. Structure design: 1, the outer box is made of high-quality cold-rolled steel plate, the surface of which is treated by environmental protection vitrification and spraying process. 2, the inner box is made of stainless steel, polished and corrosion-resistant. 3, the upper and lower two independent box structure, according to the need to place the items, the temperature of the two boxes do not interfere with each other, to ensure that the temperature control precision of the items. Refrigeration system: *1, the international famous brand compressor, non-fluorine environmentally friendly high-efficiency refrigerant, refrigeration speed, high refrigeration efficiency; *2, the evaporator adopts heat transfer efficient copper tube, pre-buried in the wall of the inner box, refrigeration by conduction, saving internal space; *3, well-known brand condensing fan, energy-saving and efficient, quiet, reliable performance; 4, high-density thermal insulation foam layer using environmentally friendly cyclopentane foam, good thermal insulation effect; 5, each box has a separate refrigeration system, the temperature of the two chambers do not affect each other. Safety guarantee: First, with the box high and low temperature alarm, sensor failure alarm, switch door abnormal alarm function; Second, with sound beeping alarm mode; Third, the sensor failure safety operation mode (display sensor and control sensor for each other as a backup); Fourth, the temperature controller keyboard lock, password protection function to prevent arbitrary adjustment of operating parameters; Fifth, power failure protection: product delay start function, to avoid the power grid to restore power supply when more than one device at the same time lead to circuit breaker protection. Humanized design: 1, mute design; 2, the upper and lower chamber door body has a separate safety door lock design, each box has two door locks, to ensure the safety of stored items; 3, double temperature large screen digital display for easy observation; 4, the upper and lower rooms are standardized test holes, convenient for users to monitor or experimental data collection; 5, height-adjustable shelf design, according to the different items to adjust the height, improve space utilization; 6、Universal brakable casters design, convenient for users to move the equipment; 7、Double-layer door seal and inner and outer door design, lock the cold air, prevent leakage, the temperature is more uniform, the product is more energy-saving.