Ferrite Permanent Ring Magnet. Our factory supplies high-performance ferrite ring magnets (ceramic ring magnets), main grades Y30, Y30BH, Y35, Y35BH with stable magnetic performance. All sizes can be customized according to customers’ drawing, including outer diameter, inner diameter and thickness. Low cost compared with rare earth magnets, cost-effective for mass production, good anti-demagnetization ability, stable magnetism at normal temperature, corrosion resistant, no extra coating needed for daily use, complete specifications, small thin rings & large thick rings in stock. Widely applied in audio equipment like loudspeaker, speaker, horn, audio player, small motors, sensors, household appliances, magnetic adsorption parts, toys, craft magnetic accessories and industrial magnetic components. We provide OEM & ODM custom service, free samples for quality test, fast bulk delivery, strict size & magnetic inspection before shipment. If you need special size or magnetic grade, welcome to send your requirements for quotation.