Prior to World War II Degesch derived most of its Zyklon B profits from overseas sales, particularly in the United States, where it was produced under license by Roessler & Hasslacher prior to 1931 and by American Cyanamid from 1931 to 1943.
Antes da Segunda Guerra Mundial Degesch obtiña a maioría dos seus beneficios pola venda do Zyklon B no mercado internacional, particularmente no dos Estados Unidos, onde Roessler & Hasslacher producíao baixo licenza antes de 1931 e American Cyanamid dende 1931 ata 1943.