bids are invited for custom bid for services - boq item no 1 semi skilled ref mechanic per shift of 08 hours 1980 nos , custom bid for services - boq item no 2 semi skilled electrician per shift of 08 hours 330 nos , custom bid for services - boq item no 3 un skilled helper per shift of 08 hours 572 nos , custom bid for services - boq item no 4 supply only coolant additive concentrate cac ration 14 for dg set 200 litrs , custom bid for services - boq item no 5 supply only engine oil sae 15w 40 for dg set 420 litrs , custom bid for services - boq item no 6 supply only panel mounting type battery charger with transformer diode operated 24volts 10amp input range 170v to 270v 15 each