Westlake vinyl products are the key ingredients to making some of the world’s most prevalent items, such as bottles, appliance parts, residential siding, credit cards and flexible pipe. Our primary product in this segment is Polyvinyl Chloride (PVC) resin, the third most pervasively used plastic in the world. Additionally, Westlake manufactures Vinyl Chloride Monomer and Caustic. We also supply vinyl resin to two Westlake subsidiaries – North American Pipe, which manufactures PVC pipes, and Westech Building Products, which fabricates products for residential construction.