... 33M-48M and so on 3).Certificate:ISO9001:2008 radical ring ndfeb magnet (neodymium magnet)Material: Sintered Neodymium-Iron-Boron;Temperature ... ,33H-48H,30SH-45SH,30UH-38UH and 30EH-35EH;Shape: ring,block,disc,bar and so on;Size: according to customers ... ' request;Coating: Ni, Zn, gold, copper, epoxy and so on;Application: sensors, motors, rotors, wind turbines ...