Comprehensive AMC for Electronic Interlocking ( EI ) at Mandhar ( MDH ), Urkura ( URK ), Raipur Vijaynagaram Block Hut ( RVH ) & Mandir Hasaud ( MNDH ) stations of Raipur Division for a period of 36 Months through a single tender by OEM ( M/ s Medha Servo Drives Pvt. Ltd., Hyderabad ).