1.adjustable height 2.smooth work 3. Height: 6M, 8M, 10M, 12M, 1.Double Aluminum-Alloy-Mast Lifts are made up of high grade aluminum profile and equipped with the universal wheels, easily pushed around to the designated sites, beautiful structure, compact main body, light weighted, safe and reliable;2.The control panels are available on the lift platforms and ground,