S.N.T.G.N. Transgaz SA engages in transmission, international transit, natural gas dispatching and research-design. It operates through the following segments: Domestic Gas Transmission, International Gas Transmission, and Unallocated. The Domestic Gas Transmission segment is regulated by the National Regulatory Authority. The International Gas Transmission segment refers to the pipeline gas transmission without the transshipment of the Romanian territory. The Unallocated segment consists of the firm's sales of assets, rents, and royalties. The company was founded in May 2000 and is headquartered in Medias, Romania.