... magnetized Working temp. 80-220oC NdFeB Rare Earth MagnetsNeodymium Magnet is the third generation of rare-earth permanent magnets ... and the most powerful and advanced commercialized permanent magnet today. NdFeB has high coercive force, high energy ... magnets with various grades, size and shapes (block, arc, cylindrical, disk, ring, etc...) according to the customer's specification ...