21m boom lift bucket truck uses a fully telescopic working arm, with a large outrigger span and good stability. It can be operated simultaneously or individually, is safe and reliable, has a compact structure and is easy to operate. This boom bucket truck has a fast lifting speed and high working efficiency. It is flexible and can also operate flexibly in tight high-rise buildings. Our boom bucket truck for sale is widely used in installation, maintenance and climbing operations in industries such as municipal administration, electricity, street lights, advertising, communications, photography, gardening, shipbuilding, transportation, docks, airports and ports, emergency rescue, and large industrial and mining enterprises.