Single Drum Vibratory Roller Hydraulic vibration system, double-frequency and double amplitude. ... LOADER SERIES, MULTIPLE FUNCTION BACKHOE LOADER SERIES, MULT-FUNCTION ASPHALT CONCRETE PAVER SERIES, VIBRATORY ROLLER SERIES, PNEUMATIC ROLLER SERIES, VIBRATORY ROLLER ... EAST, EASTERN ASIA AND AUSTRALIA. JZZ20 Road Roller (Compactor),Single-drum Vibratory Roller, Drum width 2178mm