Provision of services in the field of building technology, in particular sanitary installations and assembly of prefabricated building components. May establish branches and subsidiaries in Switzerland and abroad, participate in other companies in Switzerland and abroad, and conduct all business that is directly or indirectly related to its purpose, acquire, encumber, sell and manage real estate in Switzerland and abroad, arrange financing for its own account or for the account of third parties, and provide guarantees and sureties for subsidiaries and third parties.