Fire Extinguishers AFFF (Aqueous Film Forming Foam) are designed to fight Class A (solid combustibles) and Class B (flammable liquids) fires. They work by forming a foam blanket that cools the fire and seals flammable vapors to prevent re-ignition. AFFF extinguishers are widely used in petrol stations, warehouses, chemical plants, airports, and industrial areas where liquid fuel risks are high. Key features include strong fire knockdown ability, portability, corrosion-resistant cylinder, and refillable design for long-term use.