Three mid-sized companies under one roof As a global management holding established in 2003, ATH combines three mid-sized mechanical engineering companies engaged in their own business operations – KROENERT, COATEMA and DRYTEC. Each specialises in a core technology and each one is a leader in its field worldwide ATH promotes a distinctive culture of innovation, thereby ensuring that each of its companies has the necessary technological edge in existing and future-oriented end markets. ATH has been based in Hamburg since the very beginning, and Hanseatic values such as trust, reliability and openness shape how each of its approximately 300 employees behave and act every day.