1. Water-based fire extinguisher is a fire extinguisher that uses water as fire extinguishing agent. 2. Water-based fire extinguisher is mainly used to extinguish liquid and solid material fires. 3. The size of water-based fire extinguishers is usually measured by volume, with 25 liters being a common specification. 4. Water-based extinguishers use water to suppress flames and reduce the fire by lowering the temperature of the fire area. 5. Water-based fire extinguishers usually have a pressure vessel filled with compressed air or nitrogen to expel water vigorously. 6. There are many types of water-based fire extinguishers, including portable, vehicular and stationary. 7. Water-based fire extinguishers can also be equipped with different accessories, including water blower, helmet and protective clothing. 8. When using water-based fire extinguishers, the power supply must be cut off first and the safety of fire fighters must be ensured. 9. When using a 25 L water based fire extinguisher, point the extinguisher at the source of the fire and pull the trigger to shoot water at the source of the fire. 10. When using water-based fire extinguishers, attention should also be paid to prevent electrical short circuit and fire source reignition. Cart Water-based Fire Extinguisher website:http://www.hgchinafiresafety.com/water-based-fire-extinguisher/cart-water-based-fire-extinguisher/