Ernst Werthmüller

Ferrum AG engages in the manufacture of can sealers and centrifuges. It offers canning machines, centrifuges, commercial washing products, and metal castings. The company was founded in 1917 and is headquartered in Rupperswil, Switzerland.

Ferrum Packaging AG manufactures and markets canning machinery. The company is headquartered in Schafisheim, Switzerland.

Axpo Holding AG engages in the trading and the marketing of solar and wind power. It provides electricity-related products and services, and grids and telecommunication services. The firm offers services in the areas of finance and controlling, corporate insurance, development and communications, information technology and risk management, taxes, legal services and human resources to its subsidiaries. The company was founded in 2001 and is headquartered in Baden, Switzerland.

AEW Energie AG provides electrical power and heating. It produces electricity from water, wind, and solar energy sources, as well as focuses on planning, installing, constructing, operating, remote monitoring, controlling, and maintaining heating systems for retail customers. The company is headquartered in Aarau, Switzerland.