strong permanent magnet,high coercive force,the max operation up ... on-time delivery 2. Material: NdFeB magnet, Neodymium magnet, Permanent magnet, Rare earth magnet, strong magnet, Neodyme magnet etc.3. Magnetic grades: N35-N48 ... motor, wind turbine generator, magnetic bearing, magnetic coupling, magnetic chuck, magnetic lifting, magnetic tooling, magnetic separator, loudspeaker, microphone, ...