... especialy use the aluminium material oterial of the weight is light, aseismatic, thetic, thetic, thetic, thetic, the high ee high efficiency ... efficiency of radiator.is thor.is the best heat exchanger in the market. scope of application:oil pressure system,lubrication system ... voltageAC110V/AC220V/380V/12V/24V Air-cooled oil cooler with built-in fan & plate-pin fin heat exchange