... good rigidity 2,advanced technology2-1, adopted advanced hydraulic system reduced the pipe joints steadiness and reliability 2-2, ... outside.3main parts : A, main electrical parts supply by siemens B, hydraulic system : China C, seals : JapanD, main motor: China E, ... 14349-93 5,documents additional:5-1,operation manual (hydraulic system, electricity principle drawing and foundation drawing )5-2,quality ...