... to your need Neodyium Magnetic mainly comprised of neodymium ,iron and boron,is the third generation of the rare-earth permanent magnets,Sintered Ndfeb ... is the strongest permanent magnets in the world up to ... 48SH,42UH,38EH,33AH 2)high working temperature:the AH series with 40 k Oe super-high coervice force can replace ...