Permanent magnets and the non-magnetic fraction permanent magnets. Permanent magnets may be a natural product, known as lodestone, also be made artificially produced (the strongest magnets are NdFeB magnets). Non-permanent magnet is heated to a certain temperature suddenly loses its magnetism, which is due to the large magnet arrangement consisting of "meta magnet" and from order to disorder caused; magnet loses its magnetism put into a magnetic field, when the magnetization reaches a certain value, it was arranged magnetized, "Yuan magnet" in and from disorder to order. In fact, not a permanent magnet permanent magnet external factors will not only change the magnetic high temperature, impact will it loses its magnetism, strong magnetic fields can also change the strength of the magnetic poles, and its high-conductivity ferrite bead, with the size of the change AC magnetic field generated by the magnetic body will soon be able to give. This has brought a revolution in the magnetic field. The power transmission from the car, to make the hard drive, CD and DVD disc high-speed rotation of the motor; the desired current from the speakers and headphones will sound pulses into the diaphragm, to medical magnetic resonance imaging (MRI) in ultrahigh density magnetic field - with a minimum volume required whenever the greatest place to Mn-Zn ferrite magnetic ring will sparkle neodymium figure. As of 2010, despite the benefits of ferrite magnets useful in weight ratio still holds the bulk of sales, but the sales total point of view, neodymium-based magnets are 1-2 times more than all the other magnets. But with the blessing to a curse. "When neodymium was invented, people think it is a little too good to be first," the magnetic Iowa State University researcher William McCallum (William McCallum) explains ferrite Ring specifications, "It needs a ferrite bead rare earth elements, even more than the latter's reserves." rare earth elements is not actually rare, accounting for a total of a few parts per million of the Earth's surface, but they are difficult to explore . Over the past few decades, almost all of the global supply of rare earth minerals from China. But China needs these elements to meet their economic and consumer demand, we have recently begun to impose a high rare earth export tariffs - a time when global demand for rare earth thirsty for knowledge when the mouth. Ferrite bead Quote, ferrite bead, the new Xin Tong magnetic provided by the Dongguan City, Tong Xin magnetic Limited. Dongguan City, Tong Xin magnetic Limited (www.dgxtxmagnet.com/) strong, credible, magnetic materials in Dongguan, Guangdong and other industries has accumulated a large number of loyal customers. The company better work attitude and constantly improve the innovation concept will lead the new Xin Tong magnetic into the brilliant and you work for a better future!