NdFeB magnets stone a kind of high energy density energy storage device, using it can achieve high efficiency of energy and information of another, but it does not consume their energy. According to NdFeB magnets site in various countries and industry statistics, development of the industry trend of further investigation.
NdFeB in Japan, the United States, the European Community National Statistics are as follows: in the computer hard drive of more than half of total (54%), followed by application of the motor 17%, hot body magnetic resonance imaging accounted for 11 Meter %, while the permanent magnet motor is mainly used in computers, industrial automation, office automation and home appliances, is again used in communications, instrumentation, magnetic separator and the electro-acoustic devices. 1995, Japan sintered Nd-Fe-B permanent magnet production has risen to 1900t, its applications in the application of VCM to expand from 56% to 59%, the application of the motor to maintain 15%, and in the application of MRL 13 %, in the application of sound 4% in 1993 to 3%, the reason is because more than 50% for audio devices ndFeB magnets have been provided in China.