This category includes specialized functional components and dedicated parts for industrial machinery. It encompasses industrial machinery-specific components that cannot be classified as standard mechanical elements, such as ATC (Automatic Tool Changer) for machine tools, pallet exchange systems, chip conveyors, coolant systems, vibratory feeders, air blow devices, safety covers, machine-specific control panels and operation panels, specialized sensor units, and machine-specific frame components. Distinguished from standard parts like general-purpose bearings and motors, as well as complete industrial machinery units, these components are used for special specification requirements by machinery manufacturers, equipment customization, and procurement of dedicated parts during maintenance.