1971

Founded as Thorson Chemical GmbH in Düsseldorf by Thorson Chemical Corp, USA

1989

Acquisition of Thorson Chemical GmbH by Klaus B. Deutzmann and Manfred W. Heim, managing directors at that time

Opening of a new office in Berlin in the Eastern part of the town 

2006

Integration into the European Azelis group

2008

Thorson Chemical GmbH becomes branch of Kraemer & Martin GmbH and since then trades under the name Thorson Chemical, Zweigniederlassung der Kraemer & Martin GmbH

Dissolution of the office in Düsseldorf and relocation of staff according to business units