bids are invited for custom bid for services - integrated housekeeping system at coaching depot thiruvananthapuram north for a period of 4 years sch1 mechanized cleaning of coaches interior and end body 162498 nos , custom bid for services - sch2 mechanized cleaning of coaches exterior 162498 nos , custom bid for services - sch3 swtc of pftr trains 53655 coaches , custom bid for services - sch4 pit and yard cleaning at coaching depot tvcn 1460 days , custom bid for services - sch5 garbage disposal at coaching depot tvcn 14600 cubic meters , custom bid for services - sch6 on board housekeeping service in tvcn based trains 6179786 08 coach hours , custom bid for services - sch7 gst at the rate of 18 percent for schedules 1 to 6 , custom bid for services - sch8 reservation charges for obhs staff total quantity :