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Air Liquide S.A. is a French multinational industrial gases company founded in 1902, serving as the second largest global supplier of industrial gases by revenues. It specializes in producing and supplying gases and related services to diverse industries, including medical, chemical, electronic, energy, and large-scale manufacturing sectors such as petrochemicals, metallurgy, and refining. The company operates in over 70 countries with headquarters in Paris and major offices worldwide, maintaining the longest pipeline network globally for direct gas and energy delivery to industrial basins. Key activities encompass large industries (26% of revenue), industrial merchant sales to SMEs (46%), healthcare solutions for chronic conditions like COPD and sleep apnea (18%), and electronics for semiconductors and photovoltaics (9%). Air Liquide invests heavily in R&D, focusing on hydrogen production, energy transition, biomethane, and digital transformation through initiatives like the Neos strategic plan and ALIAD venture capital arm. With over 67,000 employees and engineering expertise via subsidiaries like Air Liquide Engineering & Construction, it plays a pivotal role in advancing sustainable technologies, climate goals, and innovations in hydrogen mobility and e-health.