requirement of portable and trolly mounted fire extinguishers of different capacities for first aid fire requirement of portable and trolly mounted fire extinguishers of different capacities for first aid fire fighting system (extinguisher) , abc type fire extinguisher cap. 6 kg (cartridge type) , abc type fire extinguisher cap. 9 kg , co2 high pressure portable 4.5 kg fire extinguisher , co2 high pressure trolley mounted 22.5 kg fire extinguisher , mechanical foam stored pressure type 9 ltr. fire extinguisher (cartridge type) , mechanical foam trolley mounted 60 ltr. stored pressure fire extinguisher , water type stored pressure 9 ltr. fire extinguisher (cartridge type) , dcp trolley mounted fire extinguisher cap. 50 kg. , water mist 6 ltr fire extinguishers , nitrogen filling machine