Storage of biological products, viruses, germs, red blood cells, white blood cells, skin, bones, electronic devices, special materials, etc. Applicable to hospitals, blood stations, epidemic prevention stations, research institutes, electronic chemical and other enterprise laboratories, biomedical engineering research institutes, etc. Box material: high-quality structural steel plate, advanced anti-corrosion phosphating, spraying process. Liner material: It adopts all stainless steel inner liner, anti-corrosion, long service life and convenient cleaning. Insulation material: thick insulation layer and VIP insulation board, multi-channel door seal design, good insulation effect. The fluorine-free environmentally-friendly refrigerant, invented by the Institute of Physics and Chemistry of the Chinese Academy of Sciences, has a unique refrigeration circuit with independent intellectual property rights, which has a faster cooling rate and a more uniform temperature. The single-stage oil-slip compressor refrigeration technology has a stronger refrigeration capacity. Secure storage: perfect sound and light alarm system (high and low temperature, open door, abnormal voltage, power failure 11. sensor failure, condenser heat dissipation, system failure, etc.), and the storage of items is safer; Boot delay and stop interval protection function to ensure reliable operation; keyboard lock and password protection function to prevent arbitrary adjustment of operating parameters; Imported high-efficiency compressor, strong power, more reliable quality, imported EBM low noise fan, energy efficient. Condensing fan and compressor cooling fan can be intelligently started and stopped according to the change of ambient temperature and the operating state of the compressor. Test hole design to facilitate testing the temperature inside the box. Standard temperature recording printer, you can read the temperature data at any time. Optional remote communication centralized monitoring system, liquid nitrogen / carbon dioxide backup system. Obtained national CQC energy certification and environmental certification.

Model	2 inch frozen box	2ml Pronation cryotube	Volume	Inner size (mm)	Dimension (mm)	W/G.W (kg)	Cooling rate (RT ≤25℃)
NB-HL100	63	6300	100 liters	450*439*514	1066*742*820	145/176.5	2.5h
NB-HL218	132	13200	218 liters	470*570*767	840*940*1552	205/251	3.8h
NB-HL290	180	18000	290 liters	470*588*1047	755*846*1797	226/273	4h
NB-HL340	216	21600	340 liters	470*578*1250	755*895*1982	240/270	4.2h
NB-HL668	380	38000	668 liters	815*666*1215	1137*989*1994	347/403	4.5h