The Thermal Transfer Products EC series (i.e. green cooler) is upgraded and enlarged based on the EK series, with the core design of finned tube bundle, ensuring better performance. For the product, the cooling efficiency and water resource utilization optimization problems are solved, and the surface area of the aluminum finned tube is increased, ensuring that efficient cooling can be achieved at a low water flow rate. In this series, multiple material options are available, which ensures that the product can flexibly adapt to different application scenarios and meet the diversified industrial cooling requirements, thus improving the operation stability and cost effectiveness of equipment.