... is used for automobile crane QY12T, QY16T. Xuzhou CHiNZEN Bosh Machinery Co.,Ltd, located in the biggest construction machinery production ... Jiangsu Province, China, is a large scale rake manufacturer for construction machinery.Our leading products are: SOMA caliper disc brake; ... compensation device and brake cylinder. The drum brake is used for automobile crane QY12T, QY16T, QY20T, QY25T, QY30T, QY50T ...