Air Liquide, a cornerstone in the French industrial landscape, was founded in 1902 on the innovation of air liquefaction by Georges Claude and Paul Delorme. Since its IPO in 1913, the company has grown internationally, operating in 70 countries. Air Liquide's key sectors include Large Industries, Industrial Merchant, Healthcare, Electronics, and Engineering & Construction. The company's diversification ensures revenue stability, with a focus on operational and commercial synergies. While dominating the European market, Air Liquide competes with global giants like Linde, Air Products and Chemicals, and Praxair. Air Liquide's early commitment to green hydrogen and low-carbon technologies sets it apart in the industry. Financially, the company shows steady growth, generous dividends, improved return on capital employed, and reduced debt. With a market capitalization exceeding €75 billion in 2025, Air Liquide is a significant player in the CAC 40. The P/E ratio reflects its quality and growth prospects. Key historical events, such as the launch of the hydrogen strategy, acquisitions like Lurgi and Airgas, and the recent focus on green hydrogen production, highlight Air Liquide's strategic evolution. The company's ADVANCE plan, targeting decarbonization and green hydrogen, underscores its commitment to sustainable practices. By integrating historical milestones, financial performance, market positioning, and future strategies, Air Liquide presents itself as a compelling investment opportunity in the industrial sector.