The story
In 1967 AEG-Telefunken, Rohde & Schwarz, SEL (Standard Elektrik Lorenz) and Siemens established the ESG Elektronik-System-Gesellschaft. In 1992, after a merger with FEG Flug-Elektronik-Gesellschaft, the consolidated company was named ESG Elektroniksystem- und Logistik-GmbH.
From Wikipedia’s article on Elektroniksystem- und Logistik-GmbH, shared under CC BY-SA 4.0.4