2017 neodymium iron ferrite mold preparation invention patent

publish：2025-05-08 18:41:33 views ：29

publish：2025-05-08 18:41:33

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2017 permanent magnet ferrite preparation mold invention patent

Invention patent for pre forming method of sintered permanent ferrite in 2021

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22 year high-efficiency grasping and packaging device for permanent magnet ferrite magnetic sheets