... !"Usage:IT ,house appliance ,machine equipment etc.1.Performance: low noise, light vibration,strong cooling, muti-role, long life ... equipment switch, medical equipment, heater, air conditioners, inverter welding machine, automated teller machines, car freezers induction ,cooker ,audio equipment ... Static pressure. 2.when the air flow reach the cooling demand,we choose the fans with lower speed, Cause ...