The vehicle focuses on the integration of storage, transportation, and refueling, with a core positioning for the storage, transportation, and on-site refueling of liquid petroleum products such as gasoline and diesel. Leveraging the advantages of a compact chassis, it balances compliance, flexibility, and practicality, and is widely adaptable to construction sites, small mining areas, logistics network points, rural gas stations, and other scenarios. It provides convenient fuel supply services for small engineering vehicles, freight vehicles, agricultural machinery equipment, etc. Its detailed core functions are broken down as follows, covering the full dimensions of refueling main business, safety protection, operational convenience, material structure, and compliant operation and maintenance. The total capacity of the tank is 2.2 cubic meters, the effective volume is 2.1 cubic meters, and the maximum density of the quasi transport medium is 700 kilograms per cubic meter. It can stably store liquid petroleum products such as gasoline and diesel, meeting the oil storage needs of small-scale scenarios. The tank body is made of high-quality Q235 carbon steel plate, manufactured according to the national standard thickness, and adopts a single compartment design. The external dimensions of the tank body are 2900 × 1250 × 850mm, with a sturdy and compact structure that is suitable for the load-bearing characteristics of small chassis. The tank body adopts integral molding technology, and the welds have undergone strict testing, with extremely strong sealing performance, which can effectively prevent oil leakage and volatilization, prevent oil pollution. At the same time, the interior of the tank body is smooth and flat, reducing oil residue, facilitating daily cleaning and maintenance, and ensuring stable oil quality during storage.