... NdFeB magnet a):Shape: Ring and Disk with Ni,Zn coating. b):Grade : 35H used for ... ,ndfeb magnetic material,magnet.a): Size Φ3----Φ280mm for Ring, and strange size.b): Grade cover N33-N52, N30M-N50M , N30H ... co-efficient: ≤-0.45°Ch):Used in motors, auto parts and wind energyI):Production capacity:NdFeB magnet: 2160T/annumHard ferrite magnet ...