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EAO AG Celebrates 75 Years in Human-Machine Interface Business

Swiss-based EAO AG, founded in 1947, marks its 75th anniversary. The company has grown into one of the world's leading suppliers of human-machine interface products and systems.

21 June 2026
EAO AG Celebrates 75 Years in Human-Machine Interface Business
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Olten, Switzerland – EAO AG, a long-standing family-owned company, is celebrating 75 years of operation in the field of human-machine interface (HMI) solutions. Founded on August 10, 1947, by Kurt Loosli Senior and René A. Thalmann as Elektro-Apparatebau Olten, the company has evolved into a significant global player.

Today, EAO employs approximately 600 people across four production sites worldwide. The company also maintains a broad international network, comprising ten sales companies and over 50 specialized agencies. This extensive global presence allows EAO to provide localized expertise and support to its customers across various industries.

From its inception, EAO has emphasized Swiss values of precision and engineering excellence, coupled with a drive for innovation. While initially involved in developing high-voltage rectifiers and transformers, the company soon introduced its first illuminated push-button, marking an early step in HMI technology development.

Over its 75-year history, EAO has built a reputation for quality and reliability in demanding markets. The company's continued focus on developing advanced and robust HMI solutions positions it to meet the evolving needs of the global industry for years to come.

Original source: eao.com