Shandong Minglong Construction Machinery Co., Ltd, an incorporated company restructured based on former Shandong Zhangqiu Crane Factory, is a professional tower crane manufacturer recognized by the Ministry of Construction. The company covers an area of 133,320m2, fixed assets is 150 million RMB, and has more than 600 employees. It was one of the first enterprises that achieved Production License issued by the Ministry of Construction in 1988 and one of the enterprises that achieved Special Industry Tower Crane Manufacture License issued by State Bureau of Technical Supervision in 2003. In April 2005 it achieved Special Equipment Manufacturing License of People’s Republic of China and has been certificated ISO 9001:2000 standard. For more than two decades, we have developed the advanced level QTZ40, QTZ50, QTZ63, QTZ80, QTZ100 QTZ125 and QTZ 160 self-telescoping, top slewing and trolleying on horizontal jib tower cranes with Changsha Institute of Construction Machinery of the Ministry of Construction.