Sintered NdFeB(Neodymium-Iron-Boron) rare earth magnets are the strongest magnets in the world up to date, with high fluxdensity and high coercivity,the range of energy product is 26--48 MGOe.Sintered NdFeB are anisotropic and only magnetized in onedirection. Widely used in Motor, Separator,lifting, sensor, loudspeaker,MRI, VCM, and other electronics,automation systems. bb-Produced by powder metallurgical method with chemical composition of NdFeB; vv-Excellent cost to performance ratio; hh-Reasonable temperature stability; hh-Very brittle & hard; hh-High resistance to be demagnetized; yy-Poor corrosion resistance to be corrupted; cc-Not suitable for application which is exposed in high temperature conditions