germany-dresden: cleaning and sanitation services.

Germany-Gladbeck: Post and courier services

germany-frankfurt-on-main: railway transport services./ rail-bound transport of switches and large switch parts with switch transport wagon 2023f./ rail-bound transport of switches with switch transport wagons (wtw) 2023f,

research and development services and related consultancy services, research project - dzsf - effects of snowfall and frost on german rail traffic: consequences and need for action - today and in the future.

electricity supply installations - new construction of the hm heart center - emergency power system.

germany-villingen-schwenningen: engineering services.

germany-villingen-schwenningen: engineering services.

public road transport services

new construction heart center hm transmission networks, installation of telecommunications equipment

architectural, construction, engineering and inspection services.