CHUNGFO DC Cooling Fan offer maximum reliability and superior cooling performance, and widely application in any fields, such as: electronic component, computers, notebooks, printers, beer machines, wine coolers.Brushless Cooling Fan generally has 5V / 12V / 24V with frame sizes ranging from 25 mm to 135 mm, We can provide various speed rate and voltage to meet all your customized requirements, and provide free sample testing.