Multi-Head Crusher: The multi-head crusher is a specialized machine designed for the fragmentation of old cement concrete road surfaces. After the fragmentation process on the old cement concrete road surface, the particles of the crushed cement slabs gradually decrease from bottom to top. After being compacted by a Z-shaped roller, the upper particles form a flat surface, while the middle and lower particles form an interlocking structure, featuring uniform particle size, stable structure, energy saving, and environmental protection. The overlay can be either cement concrete or asphalt concrete road surface.