Hydraulic press is suitable for limiting technology of plasticity data. Such as powder product molding, plastic product molding, cold (hot) kneading metal molding, sheet drawing of four column hydraulic press, transverse pressure, bending pressure, turning through and calibration. The four column hydraulic press has independent power organization and electrical system. It is controlled by buttons. It can complete three operation methods: adjustment, manual and semi-active.  
 
Operating principle: the four column oil press is an oil pump that transmits the hydraulic oil to the integrated cartridge valve block, distributes the hydraulic oil to the upper or lower chamber of the oil cylinder through each one-way valve and overflow valve, and makes the oil cylinder move under the effect of high-pressure oil Hydraulic press is a device that uses liquid to transfer pressure. Pascal's law is obeyed when liquid transfers pressure in a closed container. The hydraulic transmission system of four column hydraulic press is composed of power organization, control organization, executive organization, auxiliary organization and working medium.