Shanghai Guanbo Machinery Equipment Co., Ltd. (GBM) is one of the leading manufacturers of loading and unloading machines in China. We are specialized in providing grabs, port machinery, metallurgical machinery, grab buckets and clamps. GBM owns a strong R&D team consisting of engineers graduated from German universities with provable practical experience, devoted to designing and manufacturing all kinds of loading and unloading machines. Our strict production process and quality assurance ...