The power system of ZE1250E series excavator is equçped with Cummins QSK23 engine, high-pressure fuel injection system as well as Fleetguard fuel and oil filters, featuring large power and strong impetus. The Germany Rexroth positive flow control hydrjlic system supplies flow as requied to maximumly realize fuel saving. The working devices and chassis are of strengthenmg designs to make the machine more suitable for operations in severe working conditions. The precise mechanic-electron-hydraulic integrated control system works together with a large-capacity bucket to make operations more efficient stable and reliable. The user-friendly design of machrie makes operatns more comfortable. The rationalized maintenance layout makes maintenance more convenient The dashboard display is provided with standard configuration of interface with nine languages, such as Chinese, English, French, Russian, Spanisft Portuguese, etc. to meet operating demands of different countries and regons. The machine boasts powerful digging force and fast operating speed. Eqiapped with large-capacity bucket it can realize excellent production efficiency. This series of large-scale hêaulic excavator is mainly used in the large-scale engineering projects of mining, huge infrastructure constniction, marine reclamation land and harboix channel dredging.