Hangzhou top hydraulic co., ltd is a oem professional manufactory of custom made hydraulic power unit and hydraulic cylinders.Also have hydraulic valves. Hydraulic cylinder technology parameters: 1.Cylinder bore size:100mm 2.Cylinder rod size:70mm 3.Cylinder stroke:1100mm 4.Pressure:18mpa 5.Cylinder drawing Pls send your request to tophydraulic at 163 doc com Wooden box