Bonded permanent ferrite is a magnet compounded by magnetic powder and high polymer materials through the special craft . It is superior to the sintered magnet in aspects of magnet shaping , size precision , flexibility etc . It may make the handed , circular , various geometric figures , sheet , coiled material (max . width 780MM, thickness 0.25-8MM , undefinite length ) according to the consumer’s requirements . Its surface may implement UV oil coating , spray lacquer , printing , lamination , double-faced adhesive tape , PVC processing and so forth . The products are widely applicable for the small-size precise motor , generator etc in aspects of the drive equipments ; loud-speaker , earphone , microphone , sound pick-up etc in aspects of the acoustic facilities ; relay , switch , sensor , instrument and meter and so no in aspects of the communication installation etc . The suction magnet is mainly used for the advertisement propaganda , electric refrigerator door sealing strip , toy and so forth . The correcting magnet is used in TV image tube , magnetic coupler , electronic lock etc .