The train wash is 160 metres long, making it the longest wash in the German capital.
Installed at the Friedrichsfelde station in the eastern part of Berlin, the installation will wash about 200 S-Bahn fast city trains every two weeks.
The investment was commissioned by Berlin's S-Bahn, a DB subsidiary.
The train wash construction was Agat's first activity in Germany and the first general contractor deal. Agat beat its German competitors that specialise in such installations due to "the best, well-conceived technological solutions and attractive price", DB said in the press release.
Agat, which registered its subsidiary Achat Infrastruktur GmbH in Berlin last year, is yet another Polish investor in Germany that offers modern and competitive engineering solutions. The total value of Polish investments in Germany has exceeded EUR 1.3 billion, PAP was told by Danuta Dominiak-Wozniak of Poland's Embassy in Berlin. (PAP)