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The year 2008 was the 25th anniversary since the invention of the third generation rare earth permanent magnet.The maximum magnetic energy product had been improved from 35MGOe in 1983 to 59.6MGOe in 2006,equivalent to 93%of
The year 2008 was the 25th anniversary since the invention of the third generation rare earth permanent magnet. The maximum magnetic energy product had been improved from 35MGOe in 1983 to 59.6MGOe in 2006, equivalent to 93% of