refilling and servicing of co2 gas cartridges, co2 fire extinguisher and refilling and servicing of co2 gas cartridges, co2 fire extinguisher andpressurized fire extinguisher for ntpc tanda , refilling of co2 gas cartridge 40grm , refilling of co2 cartridge 60 gm , refilling of co2 gas cartridge 120grm , co2 gas for refilling180 gm , refilling of co2 cartridge 200 gm , refilling of co2 gas cap.300gm, is:307 / 66 , refilling of co2 extinguisher 2.0 kg , refilling of co2 extinguisher 4.5 kg , refilling of co2 gas fire extinguisher , refilling of co2 extinguisher 6.8 kg , refilling of co2 gas cap-22.5kg, is:307 , refilling of water extinguisher 9ltr , foam type fire extinguister 9 lt , refills for dcp extinguisher 5kg , replacement of fire extinguisher valve , replacement of spindleof fire extingui , replacement of gland nut fire extinguish , drilling out of broken spindle fire exti , drilling out of broken valve fire exting , painting of exinguishers , testing of extinguishers , stickering of extinguishers , replacement of cartridge valve