Westlake Chemical Corporation is a vertically integrated global manufacturer and marketer of basic chemicals, vinyls, polymers and building products. The Company's products include a range of chemicals, which are fundamental to various diverse consumer and industrial markets, including flexible and rigid packaging, automotive products, coatings, residential and commercial construction, as well as other durable and non-durable goods. The Company operates in two segments: Olefins and Vinyls. The Olefins segment manufactures a range of petrochemical products. The Vinyls segment primarily offers PVC, vinyl chloride monomer (VCM), ethylene dichloride (EDC), chlorine, caustic soda and, through Westlake Chemical OpCo LP, ethylene. The Company is also an integrated producer of vinyls with substantial downstream integration into polyvinyl chloride (PVC) building products. The Company owns approximately 10 building product facilities.