Design, Detail Engineering, Supply, Installation, Testing And Commissioning Of Electrical And Mechanical System, Fire Detection, Fire Suppression, Dg Sets, Elevators And Bms Work For Subway Connecting Patna Museum And Bihar Museum At Patna. Design, Detail Engineering, Supply, Installation, Testing And Commissioning Of Electrical And Mechanical System, Fire Detection, Fire Suppression, Dg Sets, Elevators And Bms Work For Subway Connecting Patna Museum And Bihar Museum At Patna.