HOUSTON--(BUSINESS WIRE)--Feb. 6, 2008--Westlake Chemical Corporation (NYSE:WLK) will release its 2007 fourth quarter earnings prior to the market opening on Tuesday, February 19, 2008. The company will host a conference call at 11:00 a.m. Eastern Time (10:00 a.m. Central Time) on the same day to discuss the earnings release.

To access the conference call, dial 888-680-0879, or 617-213-4856 for international callers, approximately 10 minutes prior to the scheduled start time and reference passcode 62539151.

The conference call will also be available via webcast at http://phx.corporate-ir.net/phoenix.zhtml?p=irol-eventDetails&c=180248 &eventID=1747018, and the earnings release can be obtained via the company's Web page at http://www.westlake.com/fw/main/IR_Home_Page-123.html. (Due to its length, the first URL in this paragraph may need to be copied/pasted into your Internet browser's address field. Remove the extra space if one exists.)

This call will be available for replay beginning an hour after the call has ended, and may be accessed until 1:00 p.m. Eastern Time on February 26, 2008. The replay can be accessed by calling the following numbers: Domestic callers should dial 1-888-286-8010, and international callers may access the replay at 617-801-6888. The access code at both numbers is 53243054.

Westlake Chemical Corporation is a manufacturer and supplier of petrochemicals, polymers and fabricated products with headquarters in Houston, Texas. The company's range of products includes: ethylene, polyethylene, styrene, propylene, caustic, VCM, PVC and PVC pipe, windows and fence. For more information, visit the company's Web site at http://www.westlake.com.

    CONTACT: Westlake Chemical Corporation
             Investor Contact:
             Steve Bender, 713-960-9111
             sbender@westlake.com
             or
             Media Contact:
             David Hansen, 713-960-9111
             dhansen@westlake.com

    SOURCE: Westlake Chemical Corporation