... NdFeB magnet.8.Effective Surface treatment to prevent corrosion,Nickel-Copper-Nickel (Ni-Cu-Ni) [standard], Epoxy, Zinc ... ,Motors,rotors,wind turbines/wind generators,loudspeakers,magnetic hooks,magnetic holder,filters automobiles and so on.The ... high performance motors, brushless DC motors, generators, magnetic separation, magnetic resonance imaging, sensors and loudspeakers. They are becoming ...