With the continuous development of technology, effect comparing of heat exchanger is higher and higher, compact structure is more and more beautiful. Different heat exchanger have different growth conditions and market space, the finned heat exchanger with the largest scale and highest market share, domestic technology is most mature; Microchannel heat exchanger with volume small, the air conditioning applications have limited space, the future potential is bigger; Coaxial heat exchanger, due to the limited refrigeration, applications of heat pump is given priority to used in north more coal electricity; Brazed plate heat exchanger, compared with coaxial heat exchanger, can cool and heat, therefore, it is widely used in air conditioning, heat pump, refrigeration and other fields.

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