Heraeus is a German technology group with a focus on precious and special metals, medical technology, quartz glass and sensors as well as electronic components. Founded in Hanau in 1851, the company is one of the largest family-owned companies in Germany in terms of revenue. Heraeus employs 16,400 people in 40 countries and generated a total revenue of €25.6 billion in 2023. The headquarters and head office are in Hanau, Germany.