Plate Heat Exchanger is an energy-saving equipment that realizes heat transfer between materials between two or more fluids at different temperatures. It transfers heat from a higher-temperature fluid to a lower-temperature fluid, so that the fluid temperature reaches the process The stipulated index is to meet the needs of the process conditions, and the Plate Heat Exchanger is also one of the main equipment to improve energy efficiency. The heat exchanger industry involves nearly 30 industries such as HVAC, pressure vessels, reclaimed water treatment equipment, chemicals, and petroleum, forming an industrial chain with each other. Data show that the market size of China's heat exchanger industry in 2010 was around 50 billion yuan, mainly in the fields of petroleum, chemical industry, metallurgy, electric power, shipping, central heating, refrigeration and air conditioning, machinery, food, and pharmaceuticals.