Centrex Europe Energy & Gas
Centrex Europe Energy and Gas AG is "an international group of companies operating in the natural gas sector, focussing on the extraction and marketing of natural gas reserves". It is believed to be a Gazprom front company.
An author suggests that the shadowy companies might be related to "means of silently funneling money for high level Russian and Austrian officials into Liechtenstein and other off-shore accounts".
A U.S. Senate testimony, overseen by Sen. Joe Biden, noted: