The Heavy Vehicles Factory at Avadi rolled out its first set of indigenously built T 90 S Tanks on Monday. The existing versions were semi-knocked down and fully knocked-down tanks imported from Russia. The attempts to build indigenous tanks was set in motion after an agreement between Indian and Russian governments in 2004. The Minister State of Defence Pallam Raju said that they have achieved a major milestone in the manufacture of heavy and armoured vehicles.“We have come a long way in the production of armoured vehicles,” he said .