Westlake Chemical Corporation operates within the Plastics materials and resins sector. In addition to historical fundamental analyses, the complete report available to purchase compares Westlake Chemical with three other companies in this sector in UNITED STATES : Huntsman Corporation (2019 sales of $6.80 billion of which 58% was Polyurethanes), Chemours Co ($5.53 billion of which 48% was Fluoro products), and Eastman Chemical Company ($9.27 billion of which 35% was Additives & Functional Products).

Sales Analysis. During the year ended December of 2019, sales at Westlake Chemical were $8.12 billion. This is a decrease of 6.0% versus 2018, when the company's sales were $8.64 billion. Contributing to the drop in overall sales was the 11.7% decline in Olefins, from $2.02 billion to $1.78 billion. . However, these declines were partially offset by the increase in sales of Vinyls (up 22.7% to $8.12 billion) .