This product is made (the material consists of a polyester fiber braided mesh framework with multiple layers of polyurethane coatings on both sides) through high - temperature or high - frequency welding. To prevent the material mesh framework fibers of the welds from being eroded by the oil inside the tank and impurities in the external environment, when manufacturing the tank, all internal and external welds are sealed and welded with oil - resistant sealing materials.Compared with metal oil tanks, the flexible oil bag has advantages such as light weight, small volume, non - corrosion, and convenient loading, unloading, transportation, deployment, and retrieval. It is widely used by the US military to store bulk oil on the battlefield.In special cases, the flexible oil tank can be placed on cars, ships, and aircraft as an oil transportation container. Some flexible oil tanks can also be used for air transportation, airdropping, helicopter transporting, water towing, and underwater oil storage.In many fields such as refined oil storage and pipeline emergency repair, it can replace traditional iron oil tanks or fuel tanks, becoming a new way to store and transport liquids. It has been widely used in various industries and is an ideal choice to replace rigid tanks in the future.