soft magnet,ni-zn core,ferrite core,EMI use ,inductance use. 1.100% real origal ... years experience Product name: soft magnet ferrite core,magnetic core,magnets ,toroidal core,Ni-Zn ferrite core. Main Composite: Fe2O3 ,softmagnetism ferrite coreDetail ... .7 Usage: Our product mainly applied to industry of computer, communication,multi-media,automotive,Green lighting,office automotion,&electtromechancal ...