China Vane Pump -Vane Pump, Why Can'T It Suck?

China Vane Pump -Vane Pump, Why Can’T It Suck? China Vane Pump shows the reason why the vane pump oil can not be sucked 　　A. Reason 　　The oil level is too low, the oil can’t be sucked 　　The viscosity of the oil is too l ...