Deutsche Rohstoff AG is a Germany-based holding company. Its activities are diversified into three business segments. The Gold and Silver is engaged in extraction of those two materials mainly in Australia. Nevertheless, In September 2014, the Company sold all its shares in Wolfram Camp Mining and Tropical Metals. Moreover it also obtains silver in Germany, from which the Company makes coins. The Oil and Gas business segments is handled through its subsidiary Rhein Petroleum GmbH, Tekton Energy LLC and Salt Creek Oil & Gas LLC, and is focused on the exploration and production of oil and natural gas in Germany and the United States. The High-Tech Metals business segment is engaged in extraction and supply of materials used for production of LEDs (Light Emitting Diodes), flat panel displays, solar cells, hybrid cars and medical indispensable, such as indium, gallium, cobalt and tin. The Company operates subsidiaries in the United States, Australia, Germany and Canada.

Jenoptik is a holding company. Through its subsidiaries, Co. is an optoelectronics group engaged in the production of range of products including original equipment manufacturer or standard components, modules and subsystems through to systems and production lines for numerous sectors. Co.'s operating business is organized in the following three operating segments: Laser & Optical Systems, Metrology, and Defense & Civil Systems. The operating business within the segments is further subdivided into five divisions: Lasers & Material Processing, Optical Systems, Industrial Metrology, Traffic Solutions, and Defense & Civil Systems, each of which are subdivided into several business units.