sintered NdFeB neodymium magnet permanent Magnets for MW Wind Generator SpecificationsMagnet Neodymium 1. with lots shapes . 2. Passivation coating ... demagnetization resistance capability.3. Surface Treatment Method:Black Nickel, Chroming, Copper, Epoxy, Gold, Nickel, Nickel+Epoxy, Nickel+Sn, Passivation, Zinc.4 ... inquiry. N35 sintered NdFeB neodymium magnet permanent Magnets for MW Wind Generator