Heating equipment installation and repair; Installation and maintenance of medical devices; Repair and maintenance of 3D printers; Repair or maintenance of plastic processing machines and apparatus; Installation, maintenance and repair of computer hardware; Repair of consumer electronics; Repair of electronic apparatus; Maintenance and repair of public transport vehicles; Clock and watch repair; Furniture restoration; Renovation in the field of clothing; Safe maintenance or repair; Installation and maintenance of entertainment or sports apparatus; Maintenance of jewelry ornaments