1. Improved "220V Cooling Fan" hydrodynamic design - modify, adapt or propose new fan and frame design, thereby enhancing the efficiency of the fan is always demands the designers, the most fundamental way to improve;
2. The extension of "220V Cooling Fan" life - Improved bearings, motor design, the use of new materials, the successful introduction of technology in various fields, in order to further extend the life of the fan, the design and manufacturer who racked rack their brains;
3. Reduce the "220V Cooling Fan" operating noise - fundamental solutions to reduce friction and vibration, improve performance, and the first two can be described as the same thing, but because of the current "mute" more and more attention, some manufacturers began as a center re-entered into the R & D program, the allocation research and development efforts.