... countersink hole magnet Jamag is a professional magnet manufacturer,we speciliaze in small size ndfeb magnet,ferrite,rare earth magnet,neo magnet,ect ... rare earth magnet2.Technology :Application of new sintered NdFeB magnet techniques and equipment like casting, HDDR technology3.grades: ... Y30, Y30BH, and Y35 for Ferrite magnet is good4. Magnetic properties : High coercive force, the max operation temp ...