... , ELBA, IHI, NIIGATA, etc, concrete boom pumps, trailer pumps or shotcrete machines.4. OEM available from us.ZHONGLING concrete pump cleaning ball specification:- sponge balls ... of concrete pump and concrete pump truck in construction work equipmentserving brands of mounted truck concrete pump and concrete pump Sany ,PM, Zoomlion,Schwing,CIFA and so onPICTURE Concrete Pump Cleaning ...