Performance characteristics: 
Adopts special shutter pushing device which could open and close blind window automatically. 
Adopts one-time punch forming technology of stainless steel fan blade without formation, fracture and beautiful and durable characteristics. The high precision dynamic balance test correction can ensure the fan runs smoothly without vibration and noise reduction, which effectively enhances service life; 
Adopts the special transportation handler design, convenient for loading/unloading and transportation, meanwhile, it will not influence the installation and visual appearance of the fan. 
Configuration of efficient energy saving motor that pass the certification of 3C with the protection grade: IP55 insulation level: Grade F 
Mechanical centrifugal opener adopts high-toughness ## reinforced nylon raw materials for injection molding processing with high strength and long service life. 
Steel parts embedded in the guide rod are installed in the impeller, which enhances the reliability of the opener and effectively avoids the extending changes in the nylon production process; 
The V-type belt pulley is cast with high intensity aluminum-magnesium alloy, with light weight and high strength. 
We could manufacture fan with Type A or Type B belt upon sales situation of dealers, and meet demands of different customers efficiently.