Import, export, sale and installation of building components and interior fittings, in particular windows, doors, garage doors and kitchens, as well as the realization of buildings of all kinds as a general contractor. 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, further provide financing for its own account, as well as provide guarantees and sureties for subsidiaries.