1. N7027-12 Tower Crane Products Superior Performance 1 short arm long lifting performance, suitable for PC construction, 2 high lifting speed, 60M independent height, maximum lifting weight 12 tons. 2 The hoisting rope is neat, the steel wire rope life is long; 2, the product adaptability is strong 1 the hoisting arm has 70/65/60/55/50/45/40/35/30m nine kinds of arm length combination; the standard section size (L68b)2 * 2 * 3m 2 hoisting mechanism has the high power and the large capacity rope mechanism to choose, to meet the construction requirements of super-high projects; 3, the maintenance boom has manual configuration and electric configuration options; 3, the degree of intelligence is high 1 fault self-diagnosis technology, when the tower crane has a fault, the current fault and historical fault can be queried through the fault record, remote Management Technology, realize equipment information management, working condition, alarm data recording, tracking and analysis, remote control and so on. 3 jack-up working mode identification and speed limit of rotation and change amplitude; 4 Construction Safety Protection, dangerous working state identification and alarm of lifting anchor object;