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Magnetic material, commonly referred to as a magnetic material refers to a ferromagnetic substance, is old and uses a very wide range of functional materials, and magnetic materials as early as 3,000 years ago by people understanding and applications, such as in ancient China using natural magnet compass. Modern magnetic materials have been widely used in our lives, such as permanent magnet material is used as a motor, is applied to the transformer core material, as magneto-optical memory usage, computer floppy disks and other magnetic recording. Great bit of information on said magnetic material and information technology, automation, mechatronics, national defense, national economic aspects are closely related. And generally it believed that a magnetic material is defined by excessive elemental iron, cobalt, nickel and alloys capable of directly or indirectly generate a magnetic substance. After pressing the magnetic magnetization demagnetization of difficulty can be divided into soft magnetic materials and hard magnetic materials. Easily removed after the magnetization of the magnetic substance called soft magnetic material, it is not easy to magnetic substance called hard magnetic materials. In general, the soft magnetic remanence smaller, larger hard magnetic remanence.

Refractoriness is not lower than 1580 ℃ for a class of inorganic non-metallic materials. Refractoriness is Refractory materials cone specimen means in the absence of a load, the resistance to high temperatures without melting down of the Celsius temperature to soften. But only to define refractoriness can not fully describe the Refractory materials, 1580 ℃ is not absolute. Where is now defined as the physical and chemical properties of the material allow its use in high temperature environments called Refractory materials. Refractory materials are widely used in industry metallurgy, chemical, petroleum, machinery manufacturing, silicates, power, etc., the largest amount in the metallurgical industry, accounting for 50% to 60% of total output.

NeFeB magnetic material, as the latest development of rare earth permanent magnet materials, is known as "magnetic king" due to its excellent magnetic energy. Neodymium ferromagnetic material is the alloy of dimium metal, boron iron and so on. Also known as magnetic steel. Ndfeb has a very high magnetic energy product and JiaoLi, at the same time, the advantages of high energy density makes the ndfeb permanent magnet material in modern industry and the wide application of electronic technology, so that the instruments and meters, electronic motor, magnetization of the magnetic separation equipment miniaturization, lightweight, thin become possible.