JIENUO EXTRACTIVE FAN

1.outline border adopt advanced automatic process,more accurancy.2.material is galvanized plate,corrosion resistance and long service life.3.the stainless blade made in one time punch .the angle is reasonable,so small noise and big wind capacity,energy saving4.galvanized shutter open and close completely,wind-proof, rainproofand dustproof5.the aluminum metal alloy of the high strengh hub,adopt aviation aluminum magnesium alloy,light weight,high strength and good tensile.6.safety net easy tear down7.the six strict quality inspection process:noise inspection,vibration test, concentric performance test,fan bladerotation test, wind capacity test and the efficiency test.8.maintenance and disassembly is convenient