... of various plastic material, such as extrusion, bending, ruffled, deep drawing, etc.Cartridge valve equipped for hydraulic control system, reliable, durable ... s choice. Semi-auto has two tech: set-stroke single and set-pressure single, with pressure hold and time delay functions. The ... the protection circuit, etc. 3.7.1. The main circuit Three-phase 50HZ AC power, through the automatic air switch on and ...