After the 2018 merger of Praxair and Linde, the combined entity, Linde plc, emerged as the largest industrial gas supplier in the world, with combined 2019 revenue of approximately $28 billion. Linde has a diversified portfolio with a strong presence across the globe and across all key end markets, including chemicals and energy, manufacturing, healthcare, and metals.Praxair Inc is a supplier of gas in the United States. It produces, distributes and sells atmospheric and process gases and surface coatings in North America, Europe, South America, and Asia. Its products are oxygen, helium, nitrogen and specialty gases.