Capable of producing four compartments (four types of oil) of fireproof and explosion-proof double wall ground storage tank, can meet the customer with one tank to safely store a variety of oil products needs. The fire-proof and explosion-proof performance of the double-wall ground storage tank has passed the testing of the Chinese authorities and the strict safety testing of the Southwest Fire Research Institute of the United States, and is fully in line with the safety technical standards and requirements of the United States, so UFOL has entered the supplier list of the American Steel Tank Association and UL, and the products produced in China can be directly exported to the United States and other places in the world.