1929 Establishment in Hamburg by Alfons Köster and Willy Julius on 1st October.
1970 Fritz Wessel joins the company as partner
1978 Establishment of the GmbH (Ltd.)
1982 Establishment of the branch in Stuttgart
1985 Establishment of the branch in Frankfurt
2000 Olaf Wessel, Frank Wessel and Heinz Losert are appointed as further presidents.
2003 Establishment of the branch in Düsseldorf
2009 Panagiotis Vasilopoulos is appointed as president
2010 Establishment of the branch in Shanghai
Establishment of the branch in Bremen
2013 Establishment of the branch in Tauberbischofsheim
2014 Establishment of the branch in Munich