... Expressway, with veryconvenient transportation. At present, Our enterprise mainly produces Centrifugal fan and blower, external rotor axial fan,ventilation fan, Duct ... has been developed, Which is better than other factories in china and got good reputation from our customers. All of our ... .5 mm/s High stabitility: we test every fan and blowers before shipment, and life time more than 30000 h High ...