The construction of the double wall oil storage tank uses two layers of walls, the inner layer is used to store the liquid, and the outer layer provides an additional protective layer to prevent leaks and spills. This design can effectively reduce the harm to the environment and protect the safety of personnel and equipment. In addition, the design of the top connection makes access to the storage tank more convenient for maintenance and operation. The versatility and flexibility of diesel storage tank make them a practical solution for a wide range of applications. Not only can be used in the industrial field, but also can be used for commercial purposes. The capacity of the tank can be customized to meet specific needs, and the capacity that can be stored ranges from small to large, up to 1000 liters. In addition, multiple storage tanks can be connected together to store larger quantities. Sumac also provides the service of connecting diesel fuel storage tanks to electric diesel pumps to facilitate the supply of fuel to diesel generators. This connection method can improve the efficiency and convenience of oil supply and ensure the normal operation of diesel generators. In short, fuel storage tank is a reliable solution that provides safety and protection for a variety of businesses and organizations that need to store and distribute liquids. Its versatility and flexibility make it a practical solution that can be customized to meet customer needs. The design of the connection to the electric diesel pump further increases its functionality and convenience.