Design, Supply, Erection, Testing & Commissioning Of 25Kv, 50Hz,Ac Switching Posts (Sp/Ssp) Work At Section Jhanjharpur - Laukhabazar, Sakri - Hasanpur , Khagaria - Kusheshwar Asthan, Vaishali - Sagauli And Chakia(Sp) Of East Central Railway./Elcnmhx-Eten-03-22-23/65189757 (EXPIRED)