Gem Bids For Refilling Of Fire Extinguisher Cylinders - Dry Powder Fire Extinguisher; 4 Kg; 3 Years To 4 Years Refilling Of Fire Extinguisher Cylinders - Dry Powder Fire Extinguisher; 5 Kg; 3 Years To 4 Years Refilling Of Fire Extinguisher Cylinders - Dry Powder Fire Extinguisher; 6 Kg; 3 Years To 4 Years Refilling Of Fire Extinguisher Cylinders - Carbon Dioxide Fire Extinguisher; 5 Kg; 3 Years To 4 Years Refilling Of Fire Extinguisher Cylinders - Dry Powder Fire Extinguisher; 2 Kg; 3 Years To 4 Years