Knapsack Mist Duster (Model 3WF-3) High Efficiency: A highly flexible and efficient device for plant protection. Multi-Purpose Use: Suitable for preventing plant diseases and controlling pests in large farms, orchards, and crop fields, as well as for sanitation and epidemic prevention. Ideal for Mountainous Areas: Designed for effective use in mountainous and hilly terrains. Compact Design: Features integrated tanks for chemicals and fuel, giving the machine a small and compact form. Easy Operation: Equipped with an adjustable handle and user-friendly operation; the control switch allows four spray power levels ranging from low to high.