Air Liquide has expanded its order book to €5.5 billion, reflecting sustained demand for industrial gases and production facilities. The French group supplies oxygen, nitrogen, hydrogen and speciality gases to sectors including steel, chemicals, glass manufacturing and construction materials production. The order volume provides an indicator of capital expenditure trends in energy-intensive industries. For construction materials manufacturers—particularly cement, lime and glass producers—industrial gas supply capacity often correlates with planned production expansions and process efficiency investments.