CV123U(Tier4F) is a medium-sized, self-propelled, single drum, hydraulic vibratory roller specially designed for North America. Fulfilling the requirements of the US final Tier4F emission standard. It is characterized by a large exciting force, high compaction efficiency, and good compaction quality. It is widely used in compaction work of the base layer, sub-base layer, and rock fill in roads, railways, airports, harbors, dams, and industrial construction sites.