Product Description of HOWO 6×4 Slurry Seal Truck The HOWO 6×4 Slurry Seal Truck is a high-efficiency, intelligent road maintenance vehicle designed for micro-surfacing and tack coat applications on high-grade highways, as well as maintenance work on standard roads and municipal streets. It integrates material storage, delivery, metering, mixing, and paving into one system, offering smart operation, stable performance, and …