This announcement is neither an offer to purchase nor a solicitation of an offer to sell the Notes. The Tender Offers are made only by the Offer to Purchase, and the information in this announcement is qualified by reference to the Offer to Purchase. There is no separate letter of transmittal in connection with the Offer to Purchase. None of the Company, Celanese, the Celanese Board of Directors, the Dealer Managers, the Tender Agent and Information Agent or the trustees with respect to any Notes is making any recommendation as to whether holders should tender any Notes in response to the Tender Offers, and neither Company nor any such other person has authorized any person to make any such recommendation. Holders must make their own decision as to whether to tender any of their Notes, and, if so, the principal amount of Notes to tender.