Sunbun Founded in 1993, Sunbun Group now has possessed six production bases in Hangzhou, Wenzhou of Zhejiang Province, Jinshan of Shanghai, Xuzhou of Jiangsu Province, etc. through over 2 decades of development. As a national-level high-tech enterprise, it specializes in scientific research, design, and production of the hydraulic components, systems and actuators of construction machinery, and provides necessary services. In 2000, the Group invested in the research, development and production of the injection molding machine. Main products of this company can be classified into five categories, namely the hydraulic components, oblique-axis piston motor/pump, winch and rotary reducer for the construction machinery, traveling reducer, and injection molding machine, as well as over 100 product series and 2,000 products. The company provides a complete set of hydraulic power system, which can be widely applied to the construction auto crane, crawler crane, lorry-mounted crane, concrete machinery, loader, rotary drill, land leveler, and sanitary devices. Its products have backed up the industrialdevelopment, and gradually replaced those imports, taking the lead in market share of the auto crane industry.