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1) Adopt the this system which open and close automatically when the fan works.
2)Centrifugal shutter system and other fitting of shutter made of Nylon, high quality engineering plastics, {bfb} raw material, high strength, and long service life.
3) The inner steel fitting install in the flange, increasing the security, avoid the stretching change when Nylon system operates.
Blade:
4) Adopt the injection molded Stainless steel blade, no broken, no distortion, aesthetic and durable.
contact person : alice .e-mail : sanhejixie710￠