Design verification & Validation, Manufacture, Supply, Delivery, Installation, Testing, Commissioning (including system acceptance testing, integrated testing & commissioning and operational acceptance), Supply of spares & special tools, two years Defect Liability Period (DLP), five years Comprehensive Annual Maintenance (CAMC) along with Operation and Maintenance for a complete Integrated Underground Stations Air Conditioning System (VAC) and Tunnel Ventilation System (TVS) along with Electrical and Integrated SCADA works for 16 Underground stations in corridor-03 from KMC station to Taramani road junction station including tunnel and ramp sections between the stations.