Purchase and sale of windows and blinds, execution of conversions and renovations, brokerage, rental, management of and trade in real estate and building land, as well as trade in and import and export of goods of all kinds. May establish branches and subsidiaries at home and abroad and participate in other companies at home and abroad, as well as conduct all business that is directly or indirectly related to its purpose, further acquire, encumber, sell and manage real estate at home 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.