Setup or repair of locks, electric locks, electronic locks and peripherals of electric locks; setup or repair of metal fittings and door closers; on-call repair or maintenance of locks; repair or maintenance of locks, metal fittings, door closers, electric locks for security systems and electronic locks for security systems; repair or maintenance of safes; installation and maintenance of security systems; information service concerning lock repair; [ repair or maintenance of electric communication machines and apparatus excluding telephone, radio receivers or television receivers; repair or maintenance of electronic computer, namely, CPU, programmed IC, magnetic discs and other peripherals; ] repair or maintenance of electric consumer apparatus; providing repair information about locks of all types, door closures, safes, security systems, [ computers, central processing units (CPUs), peripherals,] electrical consumer apparatus,[ signs, ] and electrical appliances; [ building construction supervision; construction consultancy; painting or repair of signs; installation, maintenance and repair of machinery; ] installation, maintenance and repair of electric appliances