bids are invited for custom bid for services - sweeping and cleaning of washing pit including both side catwalk both side apron pit drainage depot premises cleaning and disinfection of office building art shed its premises and sick line area collection of garbage includi.. , custom bid for services - mechanized cleaning removal of unwanted plants allergies etc and washing of pit line including both side catwalk apron pit drainage spraying of bleaching powder degreasing and disinfection of apron desilting of drains in coa.. , custom bid for services - mechanized external and internal cleaning and watering of coaches at washing pit , custom bid for services - mechanized internal cleaning and watering of coaches at platform , custom bid for services - watering of through passing trains at platform