Christian Mayert

Tanquid GmbH & Co. KG operates as an independent tank storage company. It offers its services primarily to the chemical and petrochemical industries. The firm provides strategic fuel stockpiling, fuel storage and handling, fuel production, diesel and oil production, tank farm management and pipeline consulting services. The company was founded in 2005 and is headquartered in Duisburg, Germany.

Warnowquerung GmbH & Co. KG owns and operates a toll road and tunnel. The firm tunnel connects the regions to the east and west of the Warnow and provides a bypass around Rostock city center. The company was founded in 1974 and is headquartered in Rostock, Germany.

Open Grid Europe GmbH provides natural gas transmission services. The firm's activities include design and construction of pipelines from conceptual design, project management, and engineering to implementation operation of the pipeline system. It offers services including maintenance and repair, as well as control and monitoring of the network and storage facilities; provision of capacity management services that include capacity assessment and development of new gas industry standards; marketing of the capacities and support of customers; and quantity determination, and billing services. The company was founded in 2004 and is headquartered in Essen, Germany.

Techem Energie GmbH operates as a holding company. The firm focuses on the operation and management of owned and leased energy production facilities. The company is headquartered in Eschborn, Germany.

Vier Gas Transport GmbH engages in the provision of natural gas and gas transmission network services. The firm focuses on the acquisition, holding, and management of interests in gas transmission assets through its investments and operates as a transmission system operator. The company was founded on January 10, 2012 and is headquartered in Essen, Germany.