VERBIO Vereinigte BioEnergie AG produces and supplies biofuels in Germany and rest of Europe.
CropEnergies AG manufactures and distributes bioethanol, and other biofuels and related products produced from grain or other agricultural raw materials in Germany and internationally.
EnviTec Biogas AG manufactures and operates biogas and biomethane plants in Germany, Italy, Great Britain, Czechia, France, Denmark, the United States, China, Greece, and internationally.
Petro Welt Technologies AG provides oil field services to oil and gas companies in Russia and Kazakhstan.
Deutsche Rohstoff AG, together with its subsidiaries, engages in the exploration and production of crude oil, and natural gas primarily in North America, Australia, and Europe.
De Raj Group AG, through its subsidiaries, operates in the oil and gas business in Asia and Europe.
Daldrup & Söhne Aktiengesellschaft, together with its subsidiaries, provides drilling and environmental services to industries, suppliers, municipal/government bodies, and private customers in Germany and Central Europe.
Ichor Coal N.V., a mining company, engages in thermal coal production in South Africa and internationally.
Petro Matad Limited, together with its subsidiaries, explores for, develops, and produces oil in Mongolia.
Tuff Group AG engages in the oil and gas, infrastructure, energy and power generation, power engineering, fabrication, and contracting fields in Singapore, Germany, and internationally.
James Bay Resources Limited, a Canadian junior oil company, engages in the exploration, evaluation, and development of oil and gas interests in Nigeria.
Global Oil & Gas AG, through its subsidiaries, engages in the exploration and production of oil and gas in the United States.