LyondellBasell Industries is a multinational chemical company that manufactures plastics, chemicals, and refined products, with a primary focus on polyolefins like polyethylene and polypropylene. It also licenses polyolefin process technologies and produces catalysts. The company was formed in December 2007 by the acquisition of Lyondell Chemical Company by Basell Polyolefins, with its U.S. operations headquartered in Houston, Texas, and a legal domicile in Rotterdam, Netherlands.