CompanyConstructionGermany
RRI Rhein Ruhr International is an engineering company[1] founded in 1942[1] and based in Essen[1].
Every public fact with how sure it is, where it comes from and when it was stated.
“Headquarters: Essen (Wikidata Q2066).”
“Founded in 1942 (Wikidata P571).”
Dated events from the sources, newest first. Funding and ownership carry the date the source stated them.
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