Westlake Corporation revenue for the last year amounted to 12.14 B USD, the most of which — 7.83 B USD — came from its highest performing source at the moment, Performance and Essential Materials, the year earlier bringing 8.34 B USD. The greatest contribution to the revenue figure was made by United States — last year it brought Westlake Corporation 8.75 B USD, and the year before that — 8.96 B USD.