Planning, coordination and execution of plumbing, sealing and roofing work as well as trade in products in the aforementioned areas. May establish branch offices and subsidiaries in Switzerland and abroad, participate in other companies in Switzerland and abroad, and conduct all business directly or indirectly related to its purpose. Furthermore, it may acquire, encumber, sell and manage real estate in Switzerland and abroad, also arrange financing for its own account or for third parties, and provide guarantees and sureties for subsidiaries and third parties.