There are defined the following three performance parameters to determine the performance of the magnet: remanence Br: permanent magnet magnetized to technical saturation, and after removing the external magnetic field, the reserved called remanence Br. Coercive force Hc: to technical saturation magnetization of the permanent magnet B is reduced to zero, and the need to increase the magnetic field strength is called reverse coercivity magnetic induction, referred to as the coercive force energy product BH: represents the magnet gap magnetic energy spatial (two-pole magnet space) established by making the density of the electromagnet, i.e., the static magnetic energy per unit volume of the air gap. As this energy is equal to the product of the magnet Bm and Hm, so called energy product. Magnetic field: magnetic effect on the magnetic poles of the magnetic field space. Surface magnetic field: the magnetic induction of the permanent magnet surface to a specified location. Diamagnetic diamagnetic are some categories of substance, when in an external magnetic field, the magnetic field will produce a weak magnetic repulsion phenomenon. Paramagnetic paramagnetic, refers to a state of a magnetic material. Some material may be affected by external magnetic field generating means with characteristics opposite magnetization vector. Such a substance having a positive magnetic susceptibility. And paramagnetic contrast the phenomenon known as diamagnetism. The main ingredient known as magnet magnet, refers to the presence of the magnetic field around the object or material and their own internal, divided into two categories of natural and man-made. Artificial magnets usually made of metal alloy magnet manufacturers, with strong magnetism. Can be divided into a "permanent magnet" and "non-permanent magnet" traction magnet, or "magnetic hard" and "soft." Natural magnet main ingredients: iron oxide, the chemical formula Fe3O4, often referred to as "magnetic iron oxide." Having a magnetic black crystals. Ferrous oxide and iron oxide compounds can be regarded as. Because the iron oxide crystals in the presence of two different valence states of ions, one third of Fe2 +, two-thirds of Fe3 +, is a complex compound. It is insoluble in water, it can not react with water. React with acids, alkali-insoluble. The main system for primer and paint, magnetic materials for the electronics industry, but also for rust in the construction industry. Magnet manufacturer, Zhuhai magnet magnetic new Xin Tong provided by the Dongguan City, Tong Xin magnetic Limited. Xin Tong, Dongguan City, the new magnetic Limited (www.dgxtxmagnet.com/) strong, credible, in Dongguan, Guangdong magnetic materials industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the new Tong Xin magnetic and you hand into the brilliant, for a better future!