The north tower slewing tower crane slewing slewing mechanism Shandong 
 Green City Branch Construction Machinery Co., Ltd. http://www.qzkjjx.com is slewing and luffing tower crane sector professional manufacturer, our factory has advanced production equipment and production processes. Product with a compact, output torque, low noise, high efficiency, smooth, good impact resistance, safety and reliability, maintenance-free, suitable for rotary tower crane system can also be used for other institutions transmission. 
 This product by Shandong Construction Machinery Quality Supervision and Test Center certification, the main product models XXL40, XXL63, XXL80, XXL100, QTB 40, QTB40B. 
 Our company has always adhere to the "market-oriented, technology as a guarantee to quality survival, reputation and development" business philosophy, won the new and old customers the support and love.