Koop is a pioneer enterprise which involves in the research and manufacture of small power engine and standby power system. the core team consists of industrial senior technology experts and management elites, who acquire the advanced design ability as well as abundant experience in internal combustion engine, electrical and electric field. after many years' efforts, with changzhou koop power machinery co., ltd., changzhou koop imp. & exp. co., ltd., and changzhou powermart imp. & exp. co., ltd