The installation, conversion, expansion, maintenance and repair of: heating and air conditioning systems for civil and industrial use, powered by liquid, gaseous or any other type of fluid; civil and industrial plumbing systems, as well as those for water transport, treatment, use, storage and consumption within buildings, from the point of delivery of water supplied by the distributor; systems for the transport and utilization of liquid or gaseous gas within buildings, from the point of delivery of gaseous fuel supplied by the distributor; fire protection systems, solar energy collectors and irrigation systems for gardens. Retail and wholesale trade in the construction sector for building materials, tools, accessories and equipment, specific machinery, technical and technological systems, urban furniture, sports equipment, furnishings, doors and windows and accessories, bathroom furniture, decorative items and anything else related. All as better indicated in Article 2 of the Statute.