 The remainder of the economy is dominated by the retail sector and agriculture.The largest industrial enterprises include the aerospace manufacturer Polyot, the Omsk Aggregate Plant, the agricultural manufacturer Sibzavod, Omsk Baranov Motorworks, and Omsktransmash, which manufactures the T-80 main battle tank.Additionally, Omsk Rubber, the Technical Hydrocarbon Plant, Omsk-Polymer and Omsk Hydrocarbon Processing Plant, represent the petroleum and hydrocarbon industry.