Air-conditioning apparatus; Air cleaning units containing an air filter, ultraviolet lights and a photocatalytic filter; Air purifying units for commercial, domestic, or industrial use; Fridge-freezers; Gas regulators; Lighting installations; Roof fans; Showerheads and components thereof; Water conservation plumbing fixtures, namely, faucets, aerators, showerheads, water saving toilets; Watering machines for agricultural purposes