The large mobile diesel fuel tanker truck is a specialized hazardous material transport vehicle designed for fuel transportation and on-site mobile refueling. It features a rational design, stable performance, and full compliance with standards, making it widely suitable for various outdoor fuel supply scenarios. Built on a heavy-duty specialized chassis, the vehicle offers robust load-bearing capacity, smooth driving, and excellent off-road capability, easily navigating urban and rural roads, construction sites, mountain paths, and mining areas. It excels in both long-distance transport and short-term mobile operations. The tank is constructed from thickened high-quality carbon steel plates through integrated molding and welding, ensuring high pressure resistance, deformation prevention, and superior sealing to eliminate fuel leakage or volatilization. It is resistant to acids, alkalis, and corrosion, delivering long-lasting durability. Available in a full range of volume specifications, it meets diverse fuel supply demands. The vehicle comes standard with a complete professional fuel supply system, including a high-power self-priming oil pump, precise flow meter, wear-resistant fuel hose, quick-fill nozzle, and vapor recovery device. It integrates fuel extraction, transportation, and dispensing, delivering fast output, accurate measurement, and simple operation that can be easily handled by a single operator. Manufactured strictly in accordance with hazardous material transport safety standards, the truck is equipped with comprehensive safety features such as a fire arrestor, electrostatic grounding strap, fire extinguisher, explosion-proof devices, emergency shut-off valve, and anti-overflow alarm. It ensures full protection against static electricity, open flames, and accidental leaks, guaranteeing safety during transport and operation with reliable fire and explosion resistance. Combining fuel storage, long-distance transport, and on-site mobile refueling, this versatile vehicle offers high mobility without relying on fixed gas stations. It can directly reach construction sites, mining areas, large project sites, logistics parks, ports, and remote factories, enabling point-to-point fuel supply. This eliminates intermediate transfer processes, significantly reducing fuel costs and improving efficiency. With complete documentation, the truck complies with national vehicle licensing standards and hazardous material road transport regulations. It can be legally registered for operation, ensuring hassle-free annual inspections. As a highly practical fuel supply vehicle, it serves as an essential asset in engineering projects, fleet operations, field work, and fuel distribution.