supply of supply of valve unit add( auto drop device)supply of valve unit add( auto drop device),supply of valve unit add( auto drop device) for tc coaches of train 18 vande bharat express, pantograph type wbl 22.03 of schunk make, schunk spare part no. 909010012600, schunk drawing no. 2- v15.16191. [ warranty period: 30 months after the date of delivery ] , hydraulic dampers of pantograph for tc coaches of train 18 aka vande bharat express, pantograph type wbl 22.03 of schunk make, schunk spare part no. 909010006000, schunk drawing no.3-7432 make brand -schunk [ warranty period: 30 months after the date of delivery ] , supply of horn 1800 of pantograph for tc coaches of train 18 - 2013 vande bharat express, pantograph type wbl 22.03 of schunk make, schunk spare part no. 909010004400, schunk drawing no.sb 029093, alt 0 [ warranty period: 30 months after the date of delivery ] , supply of air bellow drive for tc coaches of train 18 vande bharat express, pantograph type wbl 22.03 of schunk make, schunk spare part no. 909010001800, schunk drawing no.1-b04.15759. [ warranty period: 30 months after the date of delivery ] , supply of shunt for type wbl 22.03 of schunk make, schunk spare part no. 909010013700, schunk drawing no.4-12800 5848. [ warranty period: 30 months after the date of delivery ]