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Magnetic components generally refer to magnetic devices, also known as magnetic materials, which are ancient and widely used functional materials. It is closely related to all aspects of informatization, automation, electromechanical integration, national defense and national economy. It is generally believed that magnetic materials refer to substances that can directly or indirectly produce magnetism by excessive elements such as iron, cobalt, nickel and their alloys.

There are many kinds of magnetic devices and various classifications. According to the characteristics of substances in the external magnetic field, magnetic devices can be divided into five categories: paramagnetic substances, antimagnetic substances, ferromagnetic substances, sub-magnetic substances and antimagnetic substances; According to the difficulty of demagnetization after magnetization, it can be divided into soft magnetic materials and hard magnetic materials. According to their properties, they can be divided into metal and nonmetal. According to use, it can be divided into soft magnetic materials, permanent magnetic materials and functional magnetic materials; Functional magnetic materials include magnetostrictive materials, magnetic recording materials, magnetoresistance materials, magnetic bubble materials, magneto-optical materials, rotational magnetic materials and magnetic film materials.

Magnetic devices are widely used, including motors, consumer electronics, generators, etc. Motor and consumer electronics are the largest application fields, accounting for 31% and 20% respectively.

Magnetic devices are widely used and will play an increasingly important role in the future

Magnetic materials are the core materials in the future electrification era. At present, it is the low-carbon economy that ignites the global development of new energy vehicles and the explosive growth of small lightweight vehicles, driving the long-term demand for magnetic materials. In the future, as an important functional material, magnetic materials will play an increasingly important role in the information age. It is estimated that the market size of magnetic materials in China will reach 325 billion yuan by 2023. At the same time, driven by the goal of "double carbon", China's magnetic material market demand as a whole shows a good development trend.