Manufacturing, distribution, and trade of doors and windows as well as providing all services in the fields of steel and metal construction and sheet metal processing. Can enter into all transactions and conclude contracts that are suitable for promoting the purpose of the company, or that are directly or indirectly related thereto, furthermore establish branches and subsidiaries domestically and abroad, participate in other enterprises or merge with them, undertake financings on its own or another's account, as well as provide guarantees and sureties for subsidiaries and third parties.