Construction and Real Estate Management NRW
Da-Di-Werk County Darmstadt-Dieburg
German Youth Hostel Association
Diocese of Rottenburg-Stuttgart
Stuttgart Protestant Community
Community Hardthausen am Kocher
Community Weiherhammer
Catholic parish of Holzgerlingen
state capital Stuttgart
Province of Styria
Market town of Dießen
MWSP Mannheim
City of Kaufbeuren
City of Mannheim
City of Neckarsulm
City of Pforzheim
City of Rottenburg am Neckar
City of Schwäbisch-Hall
Austrian Economic Chamber
Benseler M.Werner GmbH & Co.KG
Catalent Germany Schorndorf GmbH
Hydramarine AS
various private builders