sintered NdFeB neodymium magnet permanent Magnets for Oil Field Motors SpecificationsMagnet Neodymium 1. with lots shapes . 2. Passivation ... , Gold, Nickel, Nickel+Epoxy, Nickel+Sn, Passivation, Zinc.4. Applications of Neodymium Magnets:AC Motors, DC Motors, and so on.Computer ... . N45 M SH UH sintered NdFeB neodymium magnet permanent Magnets for Oil Field Motors