Machine-building is the largest Ukrainian industrial sector with instrument-making, tractor and agricultural machinery building, electric engineering, automobile building, chemical and petrochemical engineering, and machine-tool construction. Ukraine also manufactures science-intensive and highly technological machines and equipment, including the development of the rocket and space industry, aircraft building, production of advanced tankers and large-tonnage vessels, fabrication of turbines for nuclear power plants, highly-efficient gas-pumping installations, equipment for high-voltage power transmission lines, etc. Ukraine is also producing cars. There are 12 automobile manufacturers in Ukraine includes ZAZ, LuAZ, Bogdan, KrAZ, Eurocar, Electron, LAZ. ZAZ (Zaporizhia Automobile Building Plant) is the main automobile-manufacturer of Ukraine, based in the south-eastern city of Zaporizhia.