The core activity of Baumacher AG consists of three main areas: 1. Excavation work: The company offers various excavation services, including demolition work, excavation, rock excavation, road construction, and other construction site work that requires an excavator. 2. Timber construction: Baumacher AG offers timber construction services, including interior finishing, facades, roofing of houses, and other timber construction work. 3. Rental of construction machinery: The company offers a selection of construction machinery for rent, such as crawler excavators, rollers, and dump trucks, to support customers in their construction work. Overall, Baumacher AG offers a comprehensive range of services in the construction and construction machinery sector.