Crank arm type aloft work lift can stretch ,and is easy to lift to work step over certain obstacles. Platform has large capacity weight ,support two or more people work meanwhile carry a certain equipment. It adopted the new high quality steel, which is high strength and light weight.It directly accesses alternating current or direct current power supplied by itself.Its driving speed is fast.Worktable is able to rise and rotating,is the ideal arial homework equipment. Lift platform has high mobility, transfer site conveniently, beautiful outlook, suitable for indoor and outdoor assignments and storage,can rotate and stretch ,easy to control. Applicable to dock, station, marketplaces, gymnasiums and residential property, workshop, and other large range homework place. We can design and product on the basis of customer's special requirements