About Our Company LyondellBasell is one of the largest plastics, chemicals and refining companies in the world. Every day, our employees work around the clock to reliably and safely deliver the chemicals, polymers, fuels and technologies that advance solutions to our world’s biggest challenges. We are the leading producer of oxyfuels worldwide, as well as polypropylene in North America and Europe. We are also the world’s largest global licensor of polyolefin technologies.*