Recently, the shortage of automotive urea is expanding in South Korea. In addition to the circulation industry (including retail, wholesale and logistics), construction, steel, automobile manufacturing and other industries are expected to be affected. An article in the central daily pointed out that at present, the inventory of vehicle urea used by Korean adult vehicle manufacturers for diesel vehicle delivery is only enough for two months, and the delivery and distribution of vehicles may be affected at the same time. South Korea is also known as a "diesel paradise". Among the 26 million registered motor vehicles in the country, the number of diesel vehicles exceeds 10 million. The high proportion of diesel vehicles makes South Korea highly dependent on vehicle urea, and the current situation of being unable to be self-sufficient also makes the dilemma persistent and difficult to solve. Since the production of vehicle urea in South Korea depends almost entirely on China's import, South Korea has fallen into the crisis of shortage of vehicle urea since China imposed export control on special raw materials in October. However, in addition to China's export control, South Korea's local factors are also an important reason for the shortage of vehicle urea.