ZPL-300s Concrete Truss Screed’s main body is made of steel.  It is usually used in various leveling, compactness and mudding project of concrete road. Central polarization system is used in this machine, the strength of vibratory force is adjustable, slurry and leveling effects are excellent. The machine is assembled by joint, connection is executed by quick coupling, so it is convenient to unload and able to be used in concrete leveling projects of all widths.