1. Safety control system: Two convenient and reliable modes of operation;working and installation, with real-time level display,stop operation braking away from machine, electrical emergency control, anti-lightning protection, automatically walk switches, CCTV monitoring function, complete safety and supervision system; 2. Excellent operating performance: Advanced load-sensing, limit load regulation and electrohydraulic proportional micro-speed control make each micro-movement extremely good and operation more stable; 3. Reliable function assurance: Key components adopt famous international brands;sufficient safety margin for structural and mechanical design; control system can operate stably in harsh environments such as cold, high temperature, altitude and sandy conditions; 4.Convenient maintenance technology: It takes approximately no more than 10min/person to adjust ;no more than 30min/per son for dai ly maintenance;no more than 2h/person to repair.GPS remote monitoring system is optional for maintenance and management; 5.Powerful lifting capacity: The maximum lifting capacity of boom is 50t×3.7m=185t·m,and the max. length of main boom is 52m; 6.Flexible configuration combination: Free hook is optional; 7.Large-chassis design: Track frame which can be broadened, ensuring excellent machine and job stability within the range of 360 °rotation; 8.Optimized transportation programs: With the function of crawler frame telescopic function, the max. transportation width of the whole machine is 3.36m; 9.Two counterweight configurations: Improve the lifting capacity of medium and long boom.