... ): Used in industrial neodymium magnet,ndfeb magnetic material,magnet.a): Size Φ3----Φ280mm for Ring, and strange size.b): Grade cover N33-N52, N30M ... material to make the property stable, It is wildly used in Motors, Wind energy, car, speakers, earphone , etc.e ... : ≤-0.45°Ch):Used in motors, auto parts and wind energyI):Production capacity:NdFeB magnet: 2160T/annumHard ferrite magnet: 6000T/annum