... concrete paver, RP451L Asphalt Concrete PaverAs the smallest full-hydro-driving made in China, RP451L asphalt concrete paver ... utilizes the techniques as follows: four-wheel driving, hydro-electric proportional infinite displacement, automatic-leveling system, automatic- ... controlled conveyors & augers, and gas-heated hydro-extendable screed with width range from 2.0m to 4 ...