Drying apparatus for chemical processing; recuperators for chemical processing; steamers for chemical processing; evaporators for chemical processing; distillers for chemical processing; heat exchangers for chemical processing; drying apparatus for textile manufacture; boilers, other than parts of non-electric prime movers or engines; air conditioners for industrial purposes; heat pumps; heat pump water heaters; freezing machines and apparatus for industrial purposes; laundry dryers, electric, for industrial purposes; towel steamers for hairdressing purposes; hair drying machines for beauty salon use; hair steamers for beauty salon use; cooking apparatus and installations for commercial use; dish drying machines for commercial use; dish disinfectant apparatus for commercial use; tap water faucets; level controlling valves for tanks; pipe line cocks; waste water treatment tanks for industrial purposes; septic tanks for industrial purposes; garbage incinerators; solar water heaters; water purifying apparatus for industrial purposes; household electrothermic appliances, other than for beauty or sanitary purposes; electric air purifiers for household purposes; electric space cooling apparatus for household purposes; gas water heaters for household purposes; household tap-water filters, non-electric; waste water treatment tanks for household purposes; septic tanks for household purposes; bath fittings.