bids are invited for custom bid for services - boq item no 1 semi skilled refrigeration mechanic per shift of 08 hours 1980 shifts , custom bid for services - boq item no 2 semi skilled refrigeration mechanic per shift of 08 hours 1430 shifts , custom bid for services - boq item no 3 supply and fill refrigerant gas r22 complete all as directed 244 kg , custom bid for services - boq item no 4 supply and fill refrigerant gas r134a 407c complete all as directed 183 kg , custom bid for services - boq item no 5 supply only v belts of size a70 08 each , custom bid for services - boq item no 6 supply only v belts of size a81 08 each , custom bid for services - boq item no 7 supply only digital compressor for 8 hp 10 hp capacity units 02 each , custom bid for services - boq item no 8 supply only digital compressor for 12 hp 14 hp capacity units 02 each , custom bid for services - boq item no 9 supply only digital compressor for 20 hp 22 hp capacity units 01 each