November 7, 2006 Morgan Stanley & Co. Incorporated 1585 Broadway New York, New York 10036 Dear Sirs and Mesdames: Blackstone Capital Partners (Cayman) Ltd. 1 ("BCP 1"), Blackstone Capital Partners (Cayman) Ltd. 2 ("BCP 2"), Blackstone Capital Partners...Underwriting Agreement • November 8th, 2006 • Celanese CORP • Plastic material, synth resin/rubber, cellulos (no glass) • New York
