Exhibit II to Schedule 13G Joint Filing AgreementJoint Filing Agreement • February 11th, 2011 • Ameriprise Financial Inc • Investment advice
The undersigned persons agree and consent to the joint filing on their behalf of this Schedule 13G dated February 11, 2011 in connection with their beneficial ownership of Celanese Corp. Columbia Management Investment Advisers, LLC authorizes Ameriprise Financial, Inc. to execute the Schedule 13G to which this Exhibit is attached and make any necessary amendments thereto.
