Tender for Comprehensive Annual Maintenance Contract Of Integrated Passenger Information System (ipis Make M/s Dat Informatics Pvt. Ltd.) Consisting Of Train Information Display Boards (tib),coach Guidance Display Board (cgdb) And Coach At A Glance Display Board (agdb) Installed At Patna Sahib (pnc) Stations For A Period Of 03 Years Under Danapur Division in Danapur - Bihar

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