Repair and Overhauling Service- 18 nos of servicing of the, power supply card pertaining to the Class I 48V DC SS SRS, charger panel including its testing at factory packing and, safe delivery; dubas; No; Service Provider Premises, Repair, and Overhauling Service- 2 nos of Servicing of the power, supply card pertaining to the Class I 220V DC SRS GPS