... shape magnet. 2. Nickel coats to protect the surface. 3.Application in electronic component model planes magnet :Material: Sintered Neodymium Iron BoronExcellent ... , the intrinsic coercive force is over 30000 Oe.Coating: Effective surface treatment to prevent corrosion, such as Nickel, Zinc, Epoxy, etc ... spray test report, aging test report according to customers’ request. model planes magnet