This model is mainly used outdoors or indoors, where there is avaliable for electricity. For example, cleaning tank, flying machine, construction site, construction machinery and equipment, military vehicle, airfield &runway, dock&ship, ship makes, oil stain&rust, seaport and container. It is also used to urban environment sanitation and cleaning, and any other kind of cleaning and sanitation. The advantage of this model is with small electric motor, powerful and high pressure, suitable for commom condition cleaning, easy to handle.