1. The lifting arm is made of high-strength cold-formed steel with high strength, high safety and industry-leading lifting performance; 2. Maximum lifting capacity of 6t, all arm length arm end lifting superior, especially short arm length lifting performance is more powerful; 3. Rich combination of arm length, the longest lifting arm 65m, 5m variable arm length, the shortest 30m, 8 kinds of arm length combination; 4. Independent height of 50m, better adaptability to working conditions, reduce the number of attachments, suitable for group tower and climbing conditions 5. The tower body is equipped with 1.6m cross-section angle steel integral section, and straight climbing ladder/inclined climbing ladder is optional. 6. The three major institutions are fully frequency conversion, lifting, slewing and luffing run smoothly; 7. Unitised trucking technology, effectively enhancing the efficiency of unloading, on-site assembly and dismantling.