Through our constant innovation and improvement, QY50K truck crane is ahead of the domestic industry by its “environment protection, safety, reliability, and the advanced”, and catches up with the international advanced technique. The product integrates the advanced design and manufacturing techniques at home and abroad. 27 exclusive core techniques achieve the national patent. The machine adopts the full-head luxury cab, integral operating cab with large view, fully covered walking plate, four-axle automobile chassis, five-segment retractable boom, oval section, single-cylinder front-support luffing, two-segment truss jib, double H outrigger and attached with the front 5th outrigger which can realize 360° full swing lifting work, and pilot hydraulic proportional control technique. The machine has strong lifting performance, and is easy and flexible to operate.