2nd Call Tender for the work of complete overhauling/servicing of Air Compressor of various make viz. ELGI/INGERSOLL RANDS/ZEN Air Tech pvt Ltd, any other make etc. of pneumatic 400kV & 220kV SF6 Circuit Breaker along with the supply of spare parts / material at 400kV Substation, GCR, MSETCL, Chandrapur.