... a compensation device and brake cylinder. The drum brake is used for automobile crane QY12T, QY16T. Xuzhou CHiNZEN Bosh Machinery Co ... in the leading position in China. Our products are widely used in loaders, cranes, aerial platform fire trucks, rollers, motor graders, ... a compensation device and brake cylinder. The drum brake is used for automobile crane QY12T, QY16T, QY20T, QY25T, QY30T, QY50T ...