[8] In the years before World War I, Adolf Messer exported a number of air separation units and expanded the company’s activities both domestically and internationally.

[6][7] In the years leading to World War II, the company primarily handled orders from the arms industry and was active in the construction of special machines.

The company developed a space-curve oxygen cutting machine, which enabled three-dimensional work on contoured armored cupolas for military vehicles.

[6] During wartime, forced laborers were employed in the production of arms components and in war-essential chemical development.

In the following years, the company re-established relationships with international partners, resuming cooperation, among others, with the Société Française des Appareils et Procédés in April 1946.

[12][13][14] In this new structure, the company continued to grow and hit the threshold of one billion Deutsche Mark in sales in 1978.

[15] In 1993, Hans Messer stepped down as CEO[10] but remained active for the company as member of the shareholders' committee and of the supervisory board until his death in 1997.

[19] In 2018, Messer signed a supply contract with Rütgers Germany, a subsidiary of Rain Carbon Inc. Messer agreed to supply hydrogen over a period of 15 years and invest in a hydrogen production facility at the Rain carbon site.

[3] The acquired businesses were not integrated into the group but consolidated in a joint venture with CVC Capital Partners.

In 2023, Bernd Eulitz was appointed CEO while Stefan Messer became Chairman of the Supervisory Board.

[24] Bernd Eulitz is acting as CEO; Stefan Messer holds the position of Chairman of the Supervisory Board.

[2][12][25] The products are used in industries such as environmental protection, pharma, medicine, food and beverage, steel and metal, cutting and welding, 3D printing, construction, science and research.

[1] In the field of green hydrogen technology for industrial and mobility applications, Messer entered a cooperation with Siemens Energy in 2021.