REPAIR/ MAINT TO AIR COOLED DUCTABLE ACs OF DIFFERENT CAPACITIES AND WALK IN COOLERS/ COLD STORAGE INCLUDING REPLACEMENT OF SPARES WITH MISC E/M WORKS AT CHAF BANGLAORE REPAIR/ MAINT TO AIR COOLED DUCTABLE ACs OF DIFFERENT CAPACITIES AND WALK IN COOLERS/ COLD STORAGE INCLUDING REPLACEMENT OF SPARES WITH MISC E/M WORKS AT CHAF BANGLAORE