The product is applicable to CNG gas station.It can be cooling for 4 grades, design pressure ≤27.5Mpa, fin-tube material is stainless and carbon steel. In 2015,we have researched bending tube type of air cooler instead of elbow type of air cooler,completely solved the quality hidden danger caused by the welding elbow. The quality and appearance have been improved greatly, we have obtained the national patent for this item.