ZQA type Decelerator 1.Weihua brand: China well-known brand; 2.Have more than 20 years experience of crane parts area ZQA Series Type Decelerator ZQA type decelerator is designed and improved at the basis of ZQ type. In order to enhance the load capacity and replace the old ZQ type,there is no change at contour,shaft and installing size, but change materials of gear to 42CrMo, and the big gear ...