High efficient cooling system with aluminum quality. Excellent performance,which can endure high working pressur-either can be used in heavy-load hydraulic pressure or lubricate system. Maximum working pressure26 bar Widely applying ,e.g.transport system,engine,hydraulic and lubricating system as well as being operated as an independent cooler. Be collocated with 12V/24V DC motor,220V/380V AC motor or the hydraulic motor-driven fan.