At the plant in Grevenbroich, Hydro make high purity primary aluminium. The site was established in 1916. Hydro Aluminium Deutschland GmbH also has its headquarters and place of management in Grevenbroich. Units in Grevenbroich Hydro Aluminium Deutschland GmbH @(margin ? "h2" : "h3")> Hydro Aluminium High Purity GmbH @(margin ? "h2" : "h3")>