Ferrite Ferrite currently the most widely used, and materials can be divided according to purpose: MnZn power ferrite materials, communications and electromagnetic compatibility (EMC) with high permeability Mn-Zn ferrite material, deflection coil Mn-Zn ferrite material, the RF broadband and electronic interference (EMI) suppression of nickel zinc ferrite material and other four categories. Material further to the high-frequency, high permeability and low loss where the magnet development with good speaker, which is two high and one low direction. Device development to small, surface mount chip and direction. Health magnet magnetic medical care purposes only have important applications in modern medicine speaker magnets Which cheap, such as magnetic resonance imaging magnet speaker, often called MRI CT (computerized tomography), and MCG Fig and magnetoencephalography applications, but there is a long history. In the Western Han Dynasty "Historical Records" (about 90 BC) in the book "public warehouse Biography" will be referred to the king serve the medical use of five kinds of mineral drugs (called five stone) treatment. The five mineral medicine refers magnet (Fe3O4), cinnabar (HgS), realgar (As2O3), alunite (aluminum potassium sulfate) and Zeng Qing (2cuCo3). Then there are the ancient healing magnet application records. Which inexpensive speaker magnet, speaker magnet, Xin Tong new 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!