provision of video surveillance system at 15 nos. a & b category stations(dhupguri,dinhata, hasimara, new mal jn ,aluabari road, arariya court, dalkhola,forbesganj, barsoi, jogbani, jalpaiguri, haibargaon, dekargaon / tezpur, hojai,, dibrugarhtown) of n.f. railway (nirbhaya fund).bidding type normal tender .