Mainly for fire fighitng, especailly for the places where fire vehicles could not reach for it has unique flexible advantages. It is an ideal fire fighting equipment for all kinds of fire brigades, flammable and explosive enterprises in cities/towns, cultural relic protection units, large warehouses, oil depots, stations, docks, ports, ships, temples, freight yards, forestry and other units that need fire prevention. It can also be used for flood fighting and drainage, long-distance water supply, site washing, etc.