Performance of maintenance and repair work as well as provision of services, in particular for trucks and other equipment; operation of a mechanical workshop, locksmith's shop, sandblasting and painting; manufacture and development of plants and products, in particular in the fields of gravel processing, recycling and special vehicle construction; execution and organization of transports of all kinds, in particular crane and special transports; participations; management of assets, in particular acquisition, financing, creation, management or disposal of properties and real estate; assumption and transfer of representations; conduct of patent and license business; trade in related articles.