1. It's made of quality copper tube and the water type blue color aluminum fin. That lead faster evaporation. Rust-proof coating treatment is performed on the casing. With thicken panel can avoid shock. The product features reasonable structure, high heat transfer efficiency, equal frost, energy-saving,low operating cost and simple installation 2. Efficient fan featuring large air volume, long shot range, and low noise enjoys a long lifespan. 3. With 5/8 copper, numerical control machining process ensures dry and clean interior of the copper tube. 4. Famous branded fan and electric heating tube feature stable quality, low noise, low power consumption and high efficiency. 5. It's serves as the best choice for refrigeration project.