Operation of gastronomy and restaurants. Development of devices, components and assemblies for building technology. Consulting of customers and planning of systems in the field of building technology as well as import, procurement, trade and distribution of corresponding materials, devices, components and assemblies of all kinds, including installation, maintenance, renovation and reconstruction. May establish branches in Switzerland and abroad and participate in other companies in Switzerland and abroad, as well as conduct all business that is directly or indirectly related to the purpose. May acquire, encumber, sell and manage real estate in Switzerland and abroad. May also provide financing for its own account or for the account of third parties, as well as assume guarantees and warranties for third parties.