Teflon plastic, also known as polytetrafluoroethylene plastic, is commonly referred to as Teflon, PTFE, F4, etc. in English, and as "plastic king", "Teflon", "Teflon", "Teflon" in Chinese. It is a corrosion-resistant heat exchanger that has been developed over the past decade. The main types of results include shell-and-tube and immersed types. It exhibits chemical and thermal stability (-250~260℃). The tube sheets and tube bundles (φ3~10mm capillary tubes) of Teflon heat exchangers are sintered using powder metallurgy technology, achieving excellent performance. By employing a unique and professional welding method, the connection strength between the Teflon heat exchanger tube bundles and tube sheets reaches 1.5 MPa, solving the problem of microleakage and tube leakage issues in traditional Teflon heat exchangers. Through combination, various forms of Teflon heat exchangers are produced, making them the choice for heat transfer in strongly corrosive, strong acid, and strong oxidizing media, and are popular among users. There are various types of Teflon heat exchangers, including immersed heat exchangers in shapes such as W-type, L-type, U-type, O-type, flat-plate type, and surrounding type, as well as tower heat exchangers and shell-and-tube heat exchangers. The working pressure, working temperature, heat transfer coefficient, and installation method of Teflon heat exchangers vary greatly depending on different types, different shell materials, and different heat media. Teflon heat exchangers, also known as plastic king heat exchangers, are widely used in chemical, acid pickling, electroplating, pharmaceutical, anodizing, and other industries due to their superb corrosion resistance and anti-aging properties. At the same time, due to their high temperature resistance, they are suitable for both steam heating and hot water heating