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Air Liquide is a global company specializing in gases, technologies, and services for industry and health sectors. Founded in 1902 and headquartered in Paris, France, Air Liquide operates in over 75 countries, serving a wide range of industries, including energy, environment, electronics, and healthcare. The company provides industrial gases and related services for various applications, including welding, cutting, chemistry, and oil refining, along with healthcare services aimed at improving respiratory conditions and providing medical gases. Air Liquide's strategic focus on innovation and sustainability, driven by advancements in hydrogen energy and environmentally friendly technologies, contributes to its broad geographic and operational reach. The company's vast distribution network and emphasis on sustainable practices position it uniquely within its sector.

Linde is the largest industrial gas supplier in the world, with operations in over 100 countries. The firm's main products are atmospheric gases (including oxygen, nitrogen, and argon) and process gases (including hydrogen, carbon dioxide, and helium), as well as equipment used in industrial gas production. Linde serves a wide variety of end markets, including chemicals, manufacturing, healthcare, and steelmaking. Linde generated approximately $34 billion in revenue in 2025.