1.  The fan function is divided into: blower and exhaust fan two kinds blower to focus on wind speed, air supply Length and Width; exhaust fan Ventilatior amount is based on focusing on.
2. The performance of a wind turbine, the most important depends on the angle of the blade. Whether blower or exhaust fan blade angle is the most important.
3. The blade material is also very important, the angle of the blade design matter how good but not excellent material with, but also can not be regarded as perfect binding. Blade material will not only affect the performance of the fan, it will affect the life of the fan blade must withstand tremendous wind pressure, if the material is not good, and the life of the blade becomes shorter relative.
4. The fan speed and the horsepower of the motor, but also affect the important factors of the amount of wind, indirect also determines whether too power. , Without credibility fan of unit testing and certification, wind and electricity consumption are insufficient admissible consumers buy unauthenticated fan is no job security, relative quality is questionable, the unit price of course cheaper.
5.  The structure and strength of the fan will also affect the life of the fan.
6. Fan of energy-saving drive way (excluding special places), long-term down virtually save considerable cost of electricity.
7. The current fan size to purchase, but the same size fan, performance, material, structure, horsepower and the life expectancy gap, you may be able to buy a cheap fan, but the quality is also greatly reduced.

　二、How should I choose the same size of the fan？
Price to buy a fan, often only buy cheap blower consider themselves equal value and excellent product is not available. Some companies buy the company by purchasing units, mostly focused on price tendency, but it ignores the structure of the wind turbine performance, blade, blade material and a notary certified by amount of wind, they will affect the life of the fan and fan quality.

　三、How to select customers is guaranteed？

• The fan directly produced by factories in Taiwan, operating life is the importance of service in the future, and the protection of product quality.

• Fan performance and the importance of quality, is the key to that effect and the number of fans and life.

• Effect, good quality, first-class service is the most fundamental spirit; effect is absent, uneven quality, service personnel constantly changing potential in the current market, the majority of Ventilatior equipment company.