While Degesch owned the rights to the brand name Zyklon and the patent on the packaging system, the chemical formula was owned by Degussa. Schlempe GmbH, which was 52 percent owned by Degussa, owned the rights to a process to extract hydrogen cyanide from waste products of sugar beet processing. This process was performed under license by two companies, Dessauer Werke and Kaliwerke Kolin, who also combined the resulting hydrogen cyanide with stabilizer from IG Farben and a cautionary agent from Schering AG to form the final product, which was packaged using equipment, labels, and canisters provided by Degesch. The finished goods were sent to Degesch, who forwarded the product to two companies that acted as distributors: Heerdt-Linger GmbH (Heli) of Frankfurt and Tesch & Stabenow (Testa) of Hamburg. Their territory was split along the Elbe river, with Heli handling clients to the west and south, and Testa those to the east. Degesch owned 51 percent of the shares of Heli, and until 1942 owned 55 percent of Testa.