This is a 3WF-3A gasoline-powered backpack sprayer and duster, a versatile agricultural and gardening tool.
It is powered by a gasoline engine.
The tank capacity is typically 14 liters (3.7 gallons).
It functions as a sprayer, duster, and blower.
The engine operates at a high speed, around 7500 r/min, for efficient application of liquids or powders.
It is designed for pest and weed control, fertilization, and sanitation in large areas.