Hydraulic cartridge valves for Daewoo Excavator machine series of DH55, DH130, DH200, DH220, DH280-5, DH290, DH300, DH360-3-5, with the characteristics of flow resistance is small, simple structure, reliable working operation, a high degree of standardization, high flow rated, high operating pressure, which can be used in more complex excavator hydraulic systems.