As a third-generation NdFeB rare earth permanent magnet materials with high performance, which are widely used in energy, transportation, machinery, medical, IT, home appliances and other industries, especially with the development of information technology as the representative of the knowledge-based economy to NdFeB rare earth permanent magnet materials industry and other functions continue to bring new uses, which brings a broader market prospects for NdFeB industry. NdFeB magnets are tetragonal crystals of neodymium, iron and boron (Nd2Fe14B) formation. This magnetic energy product (BHmax) greater than samarium cobalt magnets, then the world's largest energy product material. [24] Later semicircle magnets, Sumitomo Special Metals successfully developed powder metallurgy (powder metallurgy process), GM's successful development Churning melting (melt-spinning process) magnet steel, capable of producing NdFeB magnets. [25] It is now the strongest magnetic magnets of the permanent magnets, rare earth magnets is the most frequently used (rare earth magnet), is widely used in electronic products, such as a hard disk, mobile phones, headsets and battery powered tools and the like. Why would repel each other after the magnet off? Magnet manufacturers looking for a variety of magnets to do the experiment, the results show that the magnetic bar magnets broke after the fracture surface at the opposite (ie, synonyms appear pole) magnet cylinder, two fracture surfaces is that attract each other, it's easy together; and after breaking the ring and pie-shaped magnet at the fracture surface are mutually exclusive, hard to put the two are pressed together, even if they are hard to be with him, as long as the hand is released immediately will push each other, and one will be instantly reversed, the fracture surface at the poles seem to be of the same name. Annular or pie-shaped magnet at the broken surfaces mutually exclusive because: due to the two poles on the ring face or a round surface, i.e., the upper and lower surfaces is N, S pole magnet, after the breaking, which is also the upper and lower poles on both surfaces, So there will be two poles in the fracture surface at the top and bottom two, when the fracture surface close, corresponding to the upper and lower sides of the same name is the pole, the pole of the same name is mutually exclusive, so it will have the fracture surface at the poles of the same name illusion. Once up and down which a reversed, we can draw together firmly. Magnet steel, new magnetic Xin Tong, a magnet is provided by Xin Tong, Dongguan City, the new magnetic Limited. Xin Tong, Dongguan City, the new magnetic Limited (www.dgxtxmagnet.com/) is Dongguan, Guangdong, magnetic leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In the new Tong Xin magnetic leadership with the staff warmly welcome all inquiries to discuss, with new magnetic Tong Xin a better future.