Zetor and Ursus

On the basis of the economic policy of the political formation of the period, Czechoslovakia began to cooperate with Poland in the field of tractor manufacture. In the year 1964 Zetor provided documentation for the UR I models to help modernise tractors of the Polish company Ursus. A year later manufacture was launched of the Ursus C-4011 tractor, which was manufactured until 1992 with continuous modernisation.