... smooth running. 4.easy operation, JZC250 Concrete MixerFree-fall JZC series concrete mixer is the reversal mixer machines, the mixer canister is drove by the tooth ... It can mix the plastic and the half dry hard concrete. And it is the ideal machines for construction fields, ... road, bridge project and all kinds of concrete parts factory. JZC series mixer includes JZC250, 350, 500, 750 and JZM350. All ...