... which exposed to high temperaturesNdFeB permanent magnet is mainly used in Micro-motor, Electronic Industry, Car Industry, Petrochemical, NMR devices, ... drive and Magnet other system, and its also used in Motor bikes, Car oil-ducts magnetization, with the aim of ... a varety of sizes easily. Now, it is widely used in avigation, spaceflght, electron, electrical sound, eletrical machinery, apparatus, ...