REFILLING, MAINTENANCE & PAINTING OF FIRE FIGHTING EQUIPMENTS AT VARIOUS 220 KV & 132 KV SUB-STATIONS UNDER ETD, UNNAO.(22.5 kg CO2 type 11 Kg. CO2 type 109 kg CO2 type 4.5 kg CO2 type 2.2 Kg. CO2 type/2Kg. CO2 type 45/50 Ltr. Mechanical Foam type