National VI vehicles can use Kelansu and Kunlun Star.

Kelansu: Kelansu Automotive Environmental Protection Technology Co., Ltd. was established in 2009. It is a high-tech industry specializing in the production of automotive urea and automotive urea filling equipment and other automotive environmental products. The company is headquartered in Nanjing, Jiangsu Province. It is a domestic automotive urea manufacturer with larger scale, more mature technology and more advanced equipment.

Kunlun Star: Kunlun Star is affiliated to China National Petroleum Corporation (CNPC). PetroChina is a wholly state-owned company whose business includes oil and gas exploration and development, refining and chemical industry, oil and gas sales, and pipelines. transportation, new energy development, etc. The world's top 500 companies rank fourth.

Origin and current situation:

Because environmental protection departments in various countries have proposed to further reduce nitrogen oxide pollutants emitted by diesel engines. It is commonly known as Euro IV standard in China. Engine manufacturers began to use SCR technology (Selective Catalytic Reduction Technology) to meet the requirements of the environmental protection department.

Diesel exhaust treatment fluid (commonly known in China as: automotive urea, automotive urea, automotive environmental urea) is a consumable that must be used in SCR technology. In fact, in Europe, this policy has been implemented since 2006. European diesel exhaust fluid is called Adblue. The main representatives include BP and others.