QD series of DC-DC switching water cannon spray is a multipurpose water cannon replacements. Apart from the long-range jet with DC switching water cannon fire and shut down the flow function, Jet Spray function and is also open, alternate functions can be remote centers in the fight against the fire source close to the surface while fighting a small fire. used to spray water or curtains to protect their own safety, is one of a new generation of better fire equipment. The water guns are also used for fruit trees, nursery, garden spray or spray use.