... ,operate very easy.2-8,protective grating controlled by electrical system.2-9,support device with ball to reduce the damage ... plating Chromium outside.3main parts : A, main electrical parts supply by siemens B, hydraulic system : China C, seals : JapanD, main motor ... 14349-93 5,documents additional:5-1,operation manual (hydraulic system, electricity principle drawing and foundation drawing )5-2,quality ...