Its state-of-art assembling techniques, is fully capable of producing multi-stage high power and large temperature difference Thermoelectric Cooling (TEC) modules. The cooling output of the module may reach tens of watts and its temperature difference is more than 90℃. Hui Mao is capable of supplying this kind of cooling module in large quantities. The success of the multi-stage TEC modules brings hope in developing a whole new generation of electric cooling refrigerator, wine cooler and air cooler. Our multi-stage thermoelectric cooling modules also can be used for cooling infrared photodetectors, deep chilling systems, X-ray detectors, etc.