Using anti-static, anti-aging engineering plastic material, motor fixed in the multi-point positioning frame, which has compact structure, it is safe, stable and firm. Excellent motor, which has low noise and long life. Centrifugal pressure design, low noise, large air volume. Ventilation function provides the environment with fresh air and removes polluted air. It is applicable to public places such as reception room, office and shopping mall, etc., Manufacturer: KXJQBM