"Cooling Fan Manufacturer" Please pay special attention during installation, noise or vibration due to resonance; and when the fan in operation, do not attempt to lock up a particularly long time fan, it would not be diverted due to continuous stop generating heat and burning fan; do not use Do not touch the power cord crimping blades and wrapped around the fan or with the use of the cord, this axis will be destroyed with the power cord and any combustible gases harmful to the environment; when handling or operation, "Cooling Fan Manufacturer" such as falling from a height of 60cm, it will produce a number of effects on the balance of the blade, in particular to avoid the falling ball bearing; Please use within six months, long-term storage on the storage environment affecting fan performance; screw torque lock housing shall not exceed 4Kgf; please do not use a screwdriver, iron bars and other things stall fans, it would damage the "Cooling Fan Manufacturer"; Please avoid dust, water droplets, insects to enter, and affect the life and defective products ; Note that the fan at high speed will hurt your fingers.