1, "24V DC Cooling Fan" pressure value.
2, the fan size.
3, to determine the fan is DC or AC.
4, "24V DC Cooling Fan" balls or oil-bearing in the form of wind turbines.
5, the fan supply voltage value, for example: AC 220V, 110V, 380V DC 5V, 12V, 24V, 36V, 48V.
6, "24V DC Cooling Fan" speed, for example, wind turbines, how many cubic meters, or how many cubic feet per minute per minute.