1899 On the 18th of june Hermann Stock founds a company for the repair of boilers and metalworking by purchasing a workshop in the Kieler Strasse.
1904 The premises at the former site are soon too small: relocation to Rendsburger Strasse. Steel structures, mill accessories and bushwood chopping machines are manufactured here.
1932 Death of the founder. Sell-off of the iron foundry which is then managed by his brother-in-law Reese.
1944 By order of the government a production base is set up in today's Poland to manufacture submarine parts.
1949 The first electric steam boiler is built.
1951 The Hansa Rotor overpressure autoclave is launched, marketed by the company's partner Mittelhäuser & Walter.
1955 Successful introduction of the fiveflue steam boiler. Followed by the stone hardening autoclave for the calcareous sandstone industry.
1969 Change in ownership. The company is now managed in the third generation by Hermann Rudolf Stock.
1970 The first year to graduate from KIN, Konserven-Institut Neumünster e.V., founded by H. Rudolf Stock in 1966.
1970 The cavitation tunnels for marine exploratory systems barely fit into the assembly hall.
1970 Founding of STOCK France.
1974 Separation from M&W. The STOCK marketing staff took part in 14 trade fairs in one year.
1975 Major contract: 14 autoclaves for SVK, Eberswalde.
1975 Founding of STOCK America.
1985 STOCK takes over the Atmos autoclaves section from the Swedish Alfa-Laval group. Founding of the GmbH (limited liability company) and ownership handed over to H. Hermann STOCK.
1986 "Rauma": the largest contract in the history of the company. Three autoclave systems are installed on board of Russian factory ships. Technical challenging, the systems had to work with sea swell and a gradient of 7.5°.
1989 STOCK builds the first fully automatic ROTOMAT system for an Italian company, under the project name "La Doria".
1998 The ROTOMAT SRI 1500-4 is presented at Chicago.
1999 Company jubilee: 100 Years STOCK.
2000 dft technology is founded as a service company by three former STOCK employees.
2003 STOCK became Satori Stocktec.
2005 Horst Hermann Stock changes to dft technology.
2007 The oscillating process achieves 20% shorter process times compared to the static sterilisation.
2008 dft technology takes over the brand STOCK and starts the manufacturing on the traditional company site.