Permanent neodymium magnet 1)composite:Nd2Fe14B 2)Grade:N,M,SH,UH,EH. 3)ISO9001,SGS,ROHS 4)Coating:Ni, Ni-Cu-Ni, Zn ... , etc Permanent neodymium magnet Specifications:1.ISO9001:2008 ... resistance and high working temperature compared to the normal grades. Permanent neodymium magnet