SOL SpA engages in the production, research, and distribution of industrial and medicinal gases; door-to-door medical care; and related medical equipment. It operates through the following business sectors: Technical Gases; and Home Care Services. The Technical Gases sector produces and sells gases such as oxygen, nitrogen, argon, hydrogen, carbon dioxide, acetylene, nitrous oxide, helium, gas mixtures, refrigerating gases, medicinal gases, and high purity and special gases; as well as designs, produces and manages onsite plant for gas production, bio banks, and hospital services. The Home Care Services sector supplies to patients technologically advanced home care services for treating chronic pathologies through the Vivisol group. The company was founded by Giovanni Annoni and Aldo Fumagalli in 1927 and is headquartered in Monza, Italy.