All activities in the fields of sanitary installations, heating and ventilation, renewable energies, in particular solar energy, photovoltaic installations, including studies; all investments in the field of sustainable development, participation in all similar companies, installation of heating equipment and photovoltaic and thermal panels, renovation of buildings related to their energy envelope and electrical installations, as well as a service for unblocking, maintenance and high-pressure cleaning of pipes; trade in all goods related to these fields, study and planning of any project as well as execution of all work related to the building; trade (purchase, sale, import, export) of all products, as well as service in the field of facility management (management of installations).