As leading crankshafts manufacturer, Shanghai Choikey Machinery Co. Ltd has over 25 years of industrial experiences & 10 years of high performance of working for European & American top customers, we provide professional products solution as below,1.Forged crankshafts ( used in kinds of pumps, compressors, homogenizers etc.); 2.Casting crankshafts ( used in pumps, compressors, homogenizers etc.); 3.Piston rods / plungers (widely used in oilfield pumps).