bids are invited for custom bid for services - mechanized cleaning of railway platforms including garbage removal of nna railway station , custom bid for services - cleaning of passenger area including garbage removal of nna railway station , custom bid for services - cleaning of fob, lift and escalator including garbage removal of nna railway station , custom bid for services - cleaning of station building including garbage removal of nna railway station , custom bid for services - cleaning of roads circulating area including garbage removal of nna railway station , custom bid for services - rag picking along track including garbage removal of nna railway station , custom bid for services - general cleaning and desilting of drains including garbage removal of nna railway station , custom bid for services - general cleaning of toilet and urinal (excluding pay and use toilet) and water booth & water coolant of nna railway station , custom bid for services - cleaning of septic tanks of nna railway station , custom bid for services - cleaning of cobweb of nna railway station , custom bid for services - collection, lifting, transportation, unloading, segregation of garbage and ways of disposal of nna railway station premises