Commercialization of ndfeb magnet, it is found that the highest performance magnets, known as the king of magnetic, has small volume, light weight and the characteristics of strong magnetic, is by far the best price-performance magnets. It has a very high magnetic energy and its maximum magnetic energy product (BHmax) is 10 times higher than Ferrite. Its mechanical processing performance is also quite good. The working temperature can reach up to 200 degrees centigrade. Moreover, it has a hard texture, stable performance and good cost performance, so its application is extremely wide. But because its chemical activity is very strong, must treat its surface coating layer.

With the development of science and technology, widely used in the digital 3C electronic mobile phones, tablets, laptops, mobile power and other products.