> This HOWO 6×4 synchronous chip seal truck integrates asphalt spraying and aggregate spreading in one pass, delivering uniform coverage, strong bonding and improved pavement durability. It is suitable for heavy-duty highway maintenance, preventive sealing, road surface restoration, municipal roads and industrial yard projects. The heavy-duty chassis and large-capacity body support efficient continuous operation. Please confirm asphalt tank capacity, hopper volume, spraying width,