用天然磁铁矿作原料，不进行磁选，直接用固相反应法生产永磁铁氧体。
The permanent magnetic ferrite was prepared by the method of solid phase reaction with the natural magnetite without magnetic separation.
橡胶磁铁产品主要是由磁粉和天然橡胶粉经挤出成型、压延成型、注射成型等工艺而制成的具有柔软性、弹性及可扭曲性的磁体。
Rubber magnet products mainly by magnetic and natural rubber powder by extrusion, calendering, injection molding processes and are made with soft and flexible and may be distorting the magnet.
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