... appearance, small occupation, durable Technical Parameters of small cold oil press machinery: Model Number1685, 1688, 120, 150Screw Diameter78mm, 95mm, 120mm, 150mm Screw Speed38r/min ... not.Fifth: Sign a formal contractOil Hydraulic Press and small cold oil press machinery: Centrifugal refining machineRefining machine functionsFiltration equipmentOil filter functionality1. Refinery process, ...