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By certification 
Exhaust fan characteristics:
1) Fan blades are adjusted by intelligent dynamic-balance tester, each blade tolerance weight controlled within 1g. Ensure the fan smooth running, lower vibration, less noise, increase stability. Six pieces stainless steel blades and the fan has all passed the experiment of homeostasis with big air volume, without deformation n, no breaking, attractive and durable.
2) Fan frame is made from highly galvanized steel sheets in order to assure highest strength and strong resistance to corrosion.
3) Fan belt pulley is aluminium magnesium alloy injection moulded which reduce the weight of blade impeller complete, high corrosion resistance.
4)Complete new CNC production line improved fan quality up to top grade, aesthetic appearance.
5) Fan Bearing: France imported bearing, high intensity, low noise, long service life.
6) Using the most advanced automatic belt tensioner to ensure working efficiency and good performance.
Many sizes of the exhaust fan can be customized:
620x620x400mm, 800x800x400mm, 900x900x400mm, 1000x1000x400mm, 1100x1100x400mm,
1100x1100x400mm, 1220x1220x400mm, 1380x1380x400mm, 1530x1530x400mm
1) Fan blades are adjusted by intelligent dynamic-balance tester, each blade tolerance weight controlled within 1g. Ensure the fan smooth running, lower vibration, less noise, increase stability. Six pieces stainless steel blades and the fan has all passed the experiment of homeostasis with big air volume, without deformation n, no breaking, attractive and durable.
2) Fan frame is made from highly galvanized steel sheets in order to assure highest strength and strong resistance to corrosion.
3) Fan belt pulley is aluminium magnesium alloy injection moulded which reduce the weight of blade impeller complete, high corrosion resistance.
4)Complete new CNC production line improved fan quality up to top grade, aesthetic appearance.
5) Fan Bearing: France imported bearing, high intensity, low noise, long service life.
6) Using the most advanced automatic belt tensioner to ensure working efficiency and good performance.
Many sizes of the exhaust fan can be customized:
620x620x400mm, 800x800x400mm, 900x900x400mm, 1000x1000x400mm, 1100x1100x400mm,
1100x1100x400mm, 1220x1220x400mm, 1380x1380x400mm, 1530x1530x400mm
