Alpek announces the preliminary Tender Offer results

Alpek announces the preliminary results of the offer made by its subsidiary Petrotemex to purchase its outsanding 9.5% Senior Notes Due 2014

San Pedro Garza Garcia, Nuevo Leon, Mexico, July 30, 2012 – Alpek, S.A.B. de C.V. (“Alpek“) announced today that its subsidiary Grupo Petrotemex, S.A. de C.V. (“Petrotemex”) has received the majority of consents from holders of its outstanding 9.5% Senior Notes (the “Bonds”) issued in 2009 and maturing in 2014. The amount outstanding of the Bonds prior to the consummation of the offer is US$275 million. Notes which did not adhere to the offer to purchase will remain outstanding.

The offer expires on August 10, 2012. Holders of the Bonds that have not adhered to the offer may still do so. Alpek will disclose the final results of the offer upon consummation of the same.

This announcement does not constitute an offer to purchase the Bonds.