Low temperature coefficient NdFeB magnets can work well under high temperature and are widely used in motors, Pumps, Sensors, Generators etc. Though the sintered NdFeB magnet has the advantage of highest magnetic energy, Cost- Effective and good mechanical properties, Its poor Curie temperature and temperature characteristic limits the further application of sintered NeFeB magnets. H. C has developped low temperature coefficient NdFeB magnets successfully.