Webcast Alert: Westlake’s Vice Chairman, James Chao, To Address UBS Grass Roots Chemical Conference

Houston, Texas – February 10, 2004 – James Chao, Vice Chairman of Westlake Chemical Corporation, will address analysts at the following event:

Analyst Conference: UBS Grass Roots Chemical Conference in New Orleans, Louisiana, Wednesday, February 11, 2004 at 10:50 a.m. CST.

Access: Live audio-only webcasting (including replays) will be provided via UBS's Web page and can be accessed at www.ibb.ubs.com.

Presentation: Please click on this link to view the presentation

Westlake 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, vinyl intermediates, PVC and PVC pipe, windows and fence.