repairing/complete rewinding of 750kva 11kv/550v make eastern transformer and equipments p.ltd. sl.no.s-854-1 for power supply to pure benidih underground at amp colliery, barora area.-providing of new electrolytic copper @1000/-per kg. (less scrap value adjusted@400/-per kg.) 2 cleaning and decarbonizing of primary and secondary coils 3 re-insulation with tp covering for both ht and lt coils 4 soldering materials i.e. rupatom d/a oxygen etc, 5 insulating materials i.e. 10% of the cost of total copper value (393kgx1000x10%) 6 transtörmer oil filtrations 7 cork sheet for top cover and bushings etc. 8 brass stud with nut washer check nut rubber bush etc. 9 energy charges for heating and baking of core and coils 10 tank cleaning and paintings 11 breather with fittings 12 labour charges for complete dismantling and assembling of core and coils, cork sheet changing, complete rewinding etc. 15% 13 total impact of gst for the purpose of ctc