This guide aims to equip investors with the information they need to constructively engage with companies in the plastic packaging value chain on the issue of plastic waste and pollution, focusing on the petrochemicals sector. It aims to support investors and other stakeholders to eliminate the production and use of problematic or unnecessary plastics in packaging; innovate to ensure that all remaining plastics are reusable, recyclable or compostable; and circulate materials to keep plastics in the economy and out of the environment.