Dalian Sanfeng Heat Exchanger Co., Ltd.(originally known as Wafangdian Oil Cooler Co., Ltd.) was founded in 1947. The company is a comprehensive enterprise integrating R&D, production, and sales of  heat exchanger products. It was recognized as a "Liaoning Provincial Specialized and Sophisticated 'Little Giant' Enterprise" in 2021.

Equipped with advanced metal cutting, welding, and testing equipment, the company offers five series of over 400 products, including oil coolers and assemblies, radiators, exhaust gas recirculation (EGR) coolers, and brazed plate heat exchangers. These products are widely used in the automotive, construction machinery, water tank, air conditioning, heating, and heat pump industries. They are sold throughout China and exported to Europe, the Americas, and South Korea.