Hangzhou Dunkai Machinery Co., Ltd. is a manufacturer of Copper casting , Aluminum casting , bushing , Copper turbine, Connecting rod, Copper nut with well-equipped testing facilities and strong technical force.With a wide range, good quality, reasonable prices and stylish designs, our products are extensively used in reducer,Air separation compressor, Auto parts, Boiler combustion machine and other industries.Our products are widely recognized and trusted by users and can meet continuously changing economic and social needs.We welcome new and old customers from all walks of life to contact us for future business relationships and mutual success!