OPERATION AND MAINTENANCE OF ALL EXISTING ELECTRICAL INSTALLATIONS EXCEPT INSTALLED PASSENGER’S LIFTS, LAN, SERVER, COMPUTER SETUP OF HALDIA UNNAYAN BHAWAN, HALDIA BHAWAN, OFFICE CUM RESIDENCE OF CEO/HDA AND RENTAL FLATS AND COMMON UTILITIES OF SWATI PHASE-II HOUSING COMPLEX FOR A PERIOD OF TWO YEARS. (EXPIRED)