... the third generation of rare-earth permanent magnets and the most powerful and advanced commercialized permanent magnet today. NdFeB has high coercive ... grades, size and shapes (block, arc, cylindrical, disk, ring, etc...) according to the customer's specification as well as ... -42UH, 28EH-38EH and 30VH-33VH.Shape of MagnetsBlock, Disc, ring, Segment, Arc, Cylinder, Round, etc.CoatingZn, Ni, NiCuNi, ...