Neodymium (NdFeB) magnets，has the high remanence, high coercive force, high energy product and high performance/cost ratio.  It is mainly made of an alloy composed of neodymium (Nd), iron (Fe) and boron (B),It is easily formed into varioussizes and widely used in many fields, such as aviation,electronics,instruments,meters,motors,medical intruments and the like. It is pecially suitable for the development of high-performance,compact and light products.