Composite covers hydraulic press is specially designed for the production of toilet lid of a new hydraulic machine, independent power structure and electrical systems and centralized control buttons, can achieve adjustment, manual and semi-automatic operation. Working pressure, pressing speed, travel range may need to be adjusted according to the process, and to complete the process of constant pressure and constant way of forming two processes, constant pressure molding process methods after the suppression of the holding pressure and delay with automatic return action. The machine in addition to the above features, the top of the cylinder having a top out, delay, automatically refunded. This series of presses for metals drawing, bending, flanging, cold extrusion, blanking and other processes, but also for correction, press-fit, powder products, abrasive products, molding and plastic products, insulation materials pressing , pressed composite covers. Features: Four three-beam structure, the computer optimized design, simple, economical and suitable. Hydraulic cartridge valve control system uses integrated system reliability, long life, small hydraulic shock, reducing the link piping and leak points. Independent electrical control system, reliable, intuitive operation and easy maintenance. Centralized control buttons, set adjustment (inching), single (semi-automatic) two kinds of operation. Can achieve certain extent, two kinds of pressure molding process, and have insurance when rolling properties. Working pressure, stroke according to process needs adjustable within the specified range.