Mini excavators Shandong Hongda,Laiyang City ISO9001 CE Power ... packaging. Hydraulic System:Equipped with the worlds top-class hydraulic pump, main valve, traveling motor and slewing motor, the ... control and the flow limiter control through a third pump (gear pump), which gives full play to the engine power.Drivers ... tasks such as digging, smashing, dredging, trenching and bulldozing. Mini excavator