HMS Hydraulic Machines & Systems Group Plc is a holding company, which produces pumps and oil gas equipment, and also producers compressors. It operates through the following segments: Industrial Pumps, Oil and Gas Equipment, Compressors, and Construction. The Industrial Pumps segment includes HMS Livhydromash JSC, Livnynasos JSC, Nasosenergomash PJSC, and HYDROMASHSERVICE JSC. The Oil and Gas Equipment segment covers HMS Neftemash JSC, Sibneftemash JSC, Trade House Sibneftemash LLC, and Giprotyumenneftegaz PJSC. The Compressors segment encompasses Kazankompessormash OJSC and NIITurbokompressor named after V.B.Shnepp JSC. The Construction segment focuses on Tomskgazstroy PJSC. The company was founded by Artem Vladimirovich Molchanov and Kirill Vladimirovich Molchanov in 1993 and is headquartered in Moscow, Russia.