布基纳法索采购需求：商用冰箱、商用冷藏柜、商用冷冻柜、展示冰箱、饮料冰箱、冰淇淋冷冻柜

I'm looking for a laboratory-type freezer capable of reaching -40°C, with a temperature range from -20°C to -40°C. The unit should have a minimum capacity of 262L for upright models or 380L for chest types. I need direct cooling with manual defrost, equipped with a digital LCD display that shows temperatures with a resolution of 0.1°C. Additionally, an effective alarm system is essential—monitor high/low temps, power failure, open door, and faulty sensors. Please ensure noise levels are ≤44 dB and include security features like a key lock and USB data logging.