There are now 1,096 magnetic materials producers in China, of which 359 focus on ferrite, 226 on rare-earth and metallic magnets, with the rest producing associated equipment and auxiliary raw materials. Of the ferrite producers, 197 produce permanent ferrite, with the annual output of 410,000 tons (of which sintered magnets account for 360,000 tons and bonded magnets 50,000 tons); 162 produce soft magnetic ferrite, with the annual output of 300,000 tons (of which manganese-zinc ferrite is 260,000 tons, nickel-zinc ferrite and magnesium-zinc ferrite together 40,000 tons); while NdFeB magnets is 40, 000 tons, and AlNiCo magnets 3,500 tons.
China has in recent years greatly improved the quality and quantity of its ferrite magnets, and basically is able to produce magnets up to the standards of the TDK Company. The performance of sintered ferrite, with roll scale as the raw material, can meet the standard of FB4B, while the performance of magnets made of ferric oxide can meet FB5 and FB6 standards. The performance of soft manganese-zinc ferrite, a high-power material, is generally up to the standards of PC30-PC40. There are also a few producers that are able to deliver products up to standards of PC44 and PC50. The ìi value of most high-magnetic-
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