1.  Frame used of advanced automatic processing technology , high precision  .

2.  Extra-thick zinc coating , anti-corrosive strong .High-strength aluminum alloy die-casting wheel ,new twisted metal forming blade.

3.  Reasonable blade angle can reach the maximum air flow . high-precision micro-computer-aided manufacturing system allows fans to maximize performance.

4.  Five strict quality testing procedures ;noise testing , vibration testing ,rotation concentric performance testing ,blade speed detection , whole machine efficiency detection .

5.  High-grade cooling fan is used of national standard aluminum motor .

6.  Large blowing rate , stable operation and long duration . low noise and power consumption..