When choosing fans, you should know some necessary information, which can effectively help you choose products quickly.

1. The size of the fan.

2. Determine whether the fan is DC or AC.

3. The value of the supply voltage of the fan. Example: AC is 220V, 110V, 380V and DC is 5V, 12V, 24V, 36V, 48V.

4. The bearings of fans are ball bearings or sleeve bearings.

5. Airflow and speed of fan. For example, how many cubic meters per minute (CMM), or how many cubic feet per minute(CFM).

6. Pressure value.

7. Customer's special requirements for fans or parameters.