Brazed plate heat exchanger is a new type of high-efficiency heat exchanger that is made by stacking a series of metal sheets with a certain corrugated shape and brazing. Thin rectangular channels are formed between various plates, and heat is exchanged through the plates. The heat exchanger consists of a thin metal plate stamped into a corrugated shape. Because the edges of the plates are welded, the medium does not flow out of the device. The contact points of the plates of the brazed heat exchanger are also welding points in order to withstand the pressure of the medium.The brazed plate heat exchanger is an evolution of the removable heat exchanger. The sealing material has been changed from rubber pads to copper or nickel. All the plates are combined by copper solder or nickel solder. Just as all contact points of the detachable heat exchanger plate must be closely fitted, all contact points of the brazed heat exchanger must be completely welded together to ensure that the heat exchanger has the highest heat exchange efficiency and Stress resistance.