... QY50Q, QLY4Z, QLY5Z, QLY6K, QLY8K, and QLY10K Etc.QINGONG truck crane adopted special chassis based on HOWO technology platform. Equipped with ... swinging telescopic booms. The stretch mode of the lifting boom is in sequence and synchronization, and the hoisting mechanisms ... are independent drive. The boom is made of high strength steel, HQ700, with main ...