Custom Bid for Services- Annual Maintenance Contract including Supply and Installation of must change material spares and scheduled maintenance of Tower Wagons in BSB Division N E Railways for 2 years Schedule A Maintenance of Cummins make Diesel En.., Custom Bid for Services- Schedule B Maintenance of other major components apart from Diesel Engine, Custom Bid for Services- Schedule C Unscheduled maintenance and optional spares required to meet unscheduled Schedule A and Schedule B