... set 1.grade from n35 to n45 2.coating:nickel,black nickel,gold,silver, 3.ISO9001:2000 , CTI Test Report magnet set ... Magnet(NdFeB magnet) is made from Neodymium,Iron,Boron and some other transitive ... cylinder, sphere, block ,ring ,tile, arc, and etc.High magnetic performance (Br: 11,000 to ... in computers(voice coil motor of hard disc drive, pick-up of optical disk drive), mobile ...