Annular NdFeB magnets are generally circular and circular magnets, which are different from square magnets. Annular NdFeB magnets are commonly used in automobiles, molds, magnetic components, instruments, MP3, tablet computers, cameras, communication tools, home appliances, electroacoustics and other fields.Summit Magnetic has a strong voice in the field of electroacoustics, and is one of the suppliers of professional audio companies such as Harman Kardon, JBL, AKG, Infinity, etc.