This is a innovation technology in the world. It sets one layer of lining bag in mental tank, forming a secondary protective layer and separating oil & gas. It can reduce 99.93% of oil & gas volatilization. According to the investigation of SINOPEC, oil & gas volatilize 0.99% during oil refinery shipping to automobile. If annul using gasoline amounts 80 million tons in our country, it means there are about 800 thousand tons oil & gas valatilized into the air each year. The non lalatilization technology solves these problems together: safety, environmental protection, energy saving, leakage defending and non-excavation modification, which made it one really innovative technology benefiting the country and people.