Demagnetization work; Demagnetization work on ferromagnetic metal objects and permanent magnets, in particular on machines, apparatus, devices, machine components, bulk materials, parts made of hard metal, magnetic data carriers, vehicles on land, air and water and permanently installed parts, namely railway tracks, ropes of aerial cableways and reinforcing bars in concrete structures; consultancy in the field of demagnetization; rental of demagnetization equipment for third parties as well a...