Westlake operations producing petrochemicals and plastics have earned the prestigious ISO 9001:2008 certification. ISO certification signifies that a company has an ongoing program of continual quality improvement. The ISO 9001:2008 certification indicates that Westlake's production facilities meet rigid standards and supplier requirements.
Westlake Chemical Corporation operations with ISO 9001:2008 certification include the following:
(Click on location below to view certificate)