1929 Otto Schümann became the new owner of the company

1938 His son Hans-Otto Schümann joined the company

1942 Founding of Vaseline Refinery Hans-Otto Schümann, Hamburg

1947 Re-construction of the plant after the 2nd World War

1951 Operation of Europe´s first de-oiling-by-sweating plant and the production of fully refined paraffin waxes

1960 Construction of a hydro-treating plant for petroleum jelly and microwaxes

1972 Founding of Ter Hell Vertriebsgesellschaft Hans-Otto Schümann GmbH & Co KG, Hamburg/Germany through the take over of Paraffin-Handelsgesell-schaft Ter Hell Paraffin which formed part of Hermann TerHell GmbH

Acquisition of shares of the trading company Durseco S.p.r.L., Duffel/Belgium

Acquisition of shares of the trading company Waxmann ApS, Hellerup/Denmark

Acquisition of shares of the blending company Paramelt B.V., Heerhugowaard/The Netherlands

1983 Acquisition of ARCO Refinery (later "Hamburger Wachsindustrie GmbH"), Hamburg/Germany

1989 Acquisition of MOORE & MUNGER MARKETING Inc., Shelton CT/USA as exclusive distributor for the United States

1992 Consolidation of production and marketing/distribution activities under the roof of Hans-Otto Schümann GmbH & Co KG, Hamburg/Germany Commissioning of the new hydrogenation plant

1993 Founding of the blending unit FUSHUN TerHell Special Wax Products Co Ltd, Fushun/Liaoning/China as a joint venture between Hans-Otto Schümann and Fushun Refinery No. 1

Founding of a subsidiary Speicher Technologie GmbH, Fürstenwalde/Germany for the development of new application for latent heat storage

1994 Acquisition of shares at American PCM producer Phase Change Laboratories, Inc., San Diego/USA

1995 Founding of the subsidiary Rubitherm GmbH, Hamburg/Germany which takes over the marketing activities for the latent heat storage product range

Takover of Alpha Chemie GmbH, Freital/Germany, producer of oxidised waxes and other value-added products

Founding of SCHÜMANN SASOL International AG, Hamburg/Germany, a merger between Hans-Otto Schümann group and the wax division of Sasol Chemical Industries Limited