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Lifting electromagnet is special equipment which utilizes the electric & magnetic physical quantity to lift attached materials and has become indispensable when to lift and transport ferromagnetism materials in lines of metallurgy, mine, machinery, shipbuilding and transportation etc and it can also be used as electromagnetic manipulator magnetic force centering bar length fixing and so on in some fields.
link:https://www.kinocranes.sg/overhead-crane/3-ton-lifting-magnet.html
3 ton Lifting Magnet | Kenancranes