Planning and execution of ventilation and air conditioning systems as well as service activities, trade in building materials of all kinds; import and export of goods of all kinds; participations; acquisition, encumbrance, management and disposal of real estate. The company may establish branches and subsidiaries in Switzerland and abroad, participate in other companies in Switzerland and abroad, acquire or merge with similar or related companies, and enter into any business and conclude any contracts that are suitable to promote the purpose of the company or are directly or indirectly related to it. It may also acquire, manage, encumber and dispose of properties, intellectual property rights and licenses of all kinds in Switzerland and abroad. It may also provide financing for its own account or for the account of third parties and arrange guarantees and sureties for subsidiaries and third parties.