... in Motor bikes, Car oil-ducts magnetization, with the aim of saving oil.Earth permanent magnet (NdFeB) has the strongest magnetism ... high-functional, but also it can processed into a varety of sizes easily. Now, it is widely used in avigation, spaceflght, electron ... replacements.Sphere Magnets or Ball magnets is ont popular shape of Rare earth magnets and perment magnets. It is always maunfavtured ...