Producer
Air Liquide Engineering & Construction
Air Liquide S.A. (Euronext: AI; Paris; ~€27B revenue 2024) is the world's second-largest industrial gas company. Air Liquide Engineering & Construction (AL E&C) is the in-house ASU design/build division. Subsidiary ALD (Air Liquide Deutschland) and other regional subsidiaries build and operate ASUs globally. AL operates ~900 air separation units across its own gas production network. Alongside Linde, the dominant Western ASU engineering contractor. AL's Sassenage, France engineering center is the primary R&D site for cryogenic process design. Air Liquide has operated in industrial gases since its founding in Paris in 1902.
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Industrial Gases (O2, N2, Ar, CO2)
60%Healthcare & Medical Gases
15%Engineering & Construction (ASUs, H2 plants)
15%Hydrogen & Clean Energy
10%
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Did you know2024
Air Liquide operates at the intersection of industrial and medical supply chains through a single molecule: oxygen. The same liquid oxygen that Air Liquide delivers to steel blast furnaces and semiconductor etching systems also fills hospital ICU oxygen systems and home healthcare patient cylinders. During COVID-19, Air Liquide's industrial oxygen infrastructure became a healthcare supply chain — the company repurposed industrial oxygen delivery trucks and storage infrastructure to supply hospital oxygen when medical-grade supply chains were overwhelmed. The industrial gas supply chain and the healthcare supply chain share cryogenic storage, distribution vehicles, and production facilities at Air Liquide's ~10,000 production sites globally.
Air Liquide S.A. ↗Origin2023
Air Liquide was founded in Paris in 1902 by Georges Claude and Paul Delorme, following Claude's invention of industrial air liquefaction. Georges Claude was one of the most prolific inventors of the early 20th century — he also invented neon lighting (1910) and designed the first commercial liquefied natural gas carriers (1930s). However, Claude's collaboration with the Nazi occupation government during WWII led to his conviction for treason after liberation; he was eventually pardoned. Air Liquide itself survived the occupation and postwar grew into the world's second-largest industrial gas company, expanding across 80+ countries.
Air Liquide S.A. ↗