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Pneumatic Cement Grouting Pump Portable High Efficiency Light Weight Technical Parameters: Model 2ZBQ-20/4 2ZBQ-10/10 2ZBQ-30/3 2ZBQ-30/30 2ZBQ-50/19 Pressure(MPa) 4 10 3 30 19 Output(L/min) 20 10 30 ...