 Roell and Korthouse, along with Toni Technik, have been part of the Zwick Roell Group since 1992.In July 2001 the group become a corporation under the name of Zwick Roell AG, incorporating Zwick, Toni Technik and Indentec Ltd. Acmel Labo, the French manufacturer of laboratory instruments for the cement, lime and plaster industry, has been part of the group since May 2002.Zwick/Roell AG acquired the German company GTM in 2007 and Messphysik of Austria in 2006.