Circular Letter N° 232 Amendment to the current mnemonic code of MADECO to INVEXANS

DEPÓSITO CENTRAL DE VALORES S.A.,
DEPÓSITO DE VALORES

Dear Particpant

Depósito Central de Valores S.A. informs participants that as of August 2, 2013, the Santiago Stock Exchange through an internal release and upon request of Invexans S.A. (MADECO) proceeded to modify the current mnemonic code “MADECO” identifying their shares in the MARKET, replacing it with INVEXANS.

Accordingly, as of today, Monday 5, August 2013, MADECO shares are valid at DCV under the new stock exchange identification code INVEXANS.

Similarly, as of today, MADECO’s historical information in terms of transactions, capital variations, closing prices and financial statements shall be inquired according to its new mnemonic code, INVEXANS.

In the event of any inquiries, please contact the customer service desk, MAC, at the email: This email address is being protected from spambots. You need JavaScript enabled to view it., telephone (56-2) 23939001

Yours sincerely,