Westlake Corporation manufactures and supplies petrochemicals, polymers, and building products in the U.S. and internationally. Its Performance and Essential Materials segment manufactures and markets polyethylene, styrene monomer, ethylene co-products, PVC, VCM,and chlorinated derivative products. The Housing and Infrastructure Products segment manufactures and sells residential PVC siding, PVC trim and moldings, roofing, decorative stone, windows, PVC decking, PVC films for inflatables, wallcovering, tape, and roofing applications, polymer composite roof tiles, and PVC pipes and fittings. Known as Westlake Chemical Corp. until 2022/02, the company was founded in 1986 and is headquartered in Houston,TX.