Oil Industry of Serbia (NIS) will invest more than 100 million euros in modernization of the retail network during two and a half years, said General Manager of that company, Kirili Kravcenko. Representatives of NIS said at the opening of rehabilitated gas station "Zmaj 2" on the highway in Belgrade, that until the end of 2014 it will be reconstructed about 250 out of 400 gas stations of NIS.
