Construction of buildings; machinery installation; repair or maintenance of industrial table-mounted electrical refrigerators and freezers; repair or maintenance of industrial prefabricated electrical refrigerators; repair or maintenance of industrial prefabricated electrical ice storage freezers; repair or maintenance of industrial deep-freezers for food; repair or maintenance of industrial quick cooling refrigerators for food; repair or maintenance of refrigerators and freezers for industrial purposes; repair or maintenance of electric showcase refrigerators and freezers for sushi; repair or maintenance of electric showcase refrigerators and freezers; repair or maintenance of table-mounted ice dispensers for industrial purposes; repair or maintenance of ice and chilled water dispensers for industrial purposes; repair or maintenance of electric water cooling apparatus for industrial purposes; repair or maintenance of industrial ice making machines with packaging functions; repair or maintenance of ice machines; repair or maintenance of freezing machines and apparatus; repair or maintenance of electric ice machines for household purposes; repair or maintenance of electric freezers and refrigerators for household purposes; repair or maintenance of ice slicers for industrial purposes; repair or maintenance of ice crushers for industrial purposes; repair or maintenance of aerated water making machines; repair or maintenance of vacuum packing machines; repair or maintenance of dish washing machines; repair or maintenance of washing machines; repair or maintenance of industrial deep fryers; repair or maintenance of industrial cooking ovens; repair or maintenance of industrial steamers for cooking; repair or maintenance of cooking equipment for industrial purposes; repair or maintenance of industrial steam convection ovens; repair or maintenance of industrial cooking heaters; repair or maintenance of electromagnetic induction cookers for industrial purposes; repair or maintenance of industrial dishwashers; repair or maintenance of dish sterilizing machines for industrial use; repair or maintenance of dish drying machines for industrial purposes; repair or maintenance of iced coffee dispensers for industrial purposes; repair or maintenance of industrial coffee heaters; repair or maintenance of draft beer dispensers with cooling function for industrial purposes; repair or maintenance of industrial juice dispensers; repair or maintenance of miso soup dispensers for industrial purposes; repair or maintenance of aerated water dispensers for industrial purposes; repair or maintenance of chilled beverage dispensers; repair or maintenance of mineral water dispensers for industrial purposes; repair or maintenance of beverage dispensers for industrial purposes; repair or maintenance of water electrolyzing apparatus and machines for industrial purposes