Westlake Chemical Corporation manufactures and markets basic chemicals, vinyls, polymers, and fabricated building products. It operates through two segments, Olefins and Vinyls. The Olefins segment offers ethylene, polyethylene, styrene monomer, and various ethylene co-products, such as chemical grade propylene, crude butadiene, pyrolysis gasoline, and hydrogen. The Vinyls segment provides polyvinyl chloride (PVC), vinyl chloride monomer, ethylene dichloride, chlorine, caustic soda, and ethylene. This segment also manufactures and sells products fabricated from PVC, including pipes, fittings, profiles, foundation building products, window and door components, and fence and deck components. The company’s products are used in various applications, such as consumer and industrial markets comprising flexible and rigid packaging, automotive products, coatings, and residential and commercial construction, as well as in other durable and non-durable goods. Westlake Chemical Corporation also offers its products for chemical processors, plastics fabricators, construction contractors, municipalities, and supply warehouses primarily in North America and Europe. Westlake Chemical Corporation was founded in 1985 and is headquartered in Houston, Texas. Westlake Chemical Corp. operates as a subsidiary of Ttwf Lp.