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1.Using advanced front double door opening device small wind resistance,good sealing, high efficiency, lengthened cone design improve exhaust power. 2.Galvanized steel frame is made of 180g/m².galvanized layeravoid rust. 3. Fan double doors closed with the rubber sealing which effectively avoid air back flow when start fans at different time.Greatly improve the operation efficency by 15-20%compared with the same power fan. 4.Reasonable cone designing with big air volume,low noise. 5.Product is safe and reliable. 6.energy conservation,lowcost.
Fan Blade easy to deform after one stamping.Fan Motor Large power, high efficiency and energy-saving.Protective Net Stability, high density, long service life.Belt Long service life, maintenance free.Aluminum Alloy WheelOne Piece Durable Automotive Bearing.Durable and Heat-Resistant Motor.High Efficiency 100% Copper Motor.