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building materials of metal; building elements of metal; building elements of metal for fastening and joining purposes; screws, bolts, screw nuts, washers, all made of metal.Machines for mechanical engineering; power-operated tools; power-operated tools for fastening and joining; power-operated bolting tools for assembling, pre- tensioning, tightening and/or loosening screw connections; power- operated bolting tools, namely wrenches, screwdrivers; power- operated bolting tools, namely bolt tensioning cylinders, torque wrenches, nut runners; power-operated bolting machines; power- operated bolting machines, namely bolting stations; hydraulic screw nuts with integrated working cylinder for pre-tensioning the screw connection; components for hydraulic systems in power-operated tools and bolting machines, namely pumps, pressure vessels, valves, high pressure hoses, couplings, nipples, coupling manifolds, test manometers, controlling means.Hand-operated implements for mechanical engineering; hand-operated tools; hand-operated tools for fastening and joining; hand-operated bolting tools for assembling, pre -tensioning, tightening and/or loosening screw connections; hand- operated bolting tools, namely wrenches, screwdrivers; hand-operated bolting tools, namely bolt tensioning cylinders, torque wrenches, nut runners.Industrial analyses and technological services; technical consultancy in bolting technology; services of an engineer in the field of bolting technology.