The listed company in the Athens Stock Exchange (A.S.E.) with the name 'SIDENOR STEEL PRODUCTS MANUFACTURING COMPANY SA' announces to the investment public that, according to the decision of the meeting of ASE Board of Directos at 29.11.2005, from the session of Athens Stock Exchange (A.S.E.) of 1.12.2005 and henceforth the market making of the common listed shares of the company will begin, in order to aid stock fluidity, with Market Maker the member of the Athens Stock Exchange (A.S.E.), BETA SECURITIES S.A.. The company has signed a contract with BETA SECURITIES S.A. with the following basic terms: 1) BETA SECURITIES S.A. will trasmit to the System of Transactions of A.S.E. commands of market making (i.e. simultaneous commands of buy and sell) on same account, on the shares of the company 'SIDENOR STEEL PRODUCTS MANUFACTURING COMPANY SA', according to the current legislation. 2) The contract of the market making has duration of one (1) year.