Electric appliance installation and repair; Information on the maintenance of measuring and test equipment; Installation, maintenance and repair of computer hardware; Installation, maintenance and repair of manufacturing machines and apparatus; Installation, maintenance and repair of temperature control apparatus; Interference suppression services for electrical apparatus; Machinery installation, maintenance and repair; Maintenance, repair and cleaning of apparatus and machinery for manufacturing semi-conductors; Providing information relating to the repair or maintenance of semi-conductor manufacturing machines and systems; Providing information relating to the repair or maintenance of semiconductor manufacturing machines and systems; Rebuilding machines that have been worn or partially destroyed; Repair or maintenance of integrated circuits manufacturing machines and systems; Repair or maintenance of power distribution or control machines and apparatus; Repair or maintenance of semiconductor manufacturing machines and systems