The scientific name is a diesel car exhaust urea treatment solution. Applied to a diesel engine. It is a technique used in the SCR, diesel exhaust to reduce nitrogen oxides in contaminated liquids. Its composition is 32.5% and 67.5% of high-purity urea deionized water. Its origin and status quo: As national environmental protection department to further reduce diesel emissions of nitrogen oxide pollutants discharge. Domestic commonly known as Euro IV standards. Engine manufacturers began using SCR technology (Selective Catalytic Reduction Technology selective catalytic reduction) to meet the requirements of environmental protection department. Diesel Exhaust Fluid (domestic commonly known as: automotive urea, urea vehicle, automotive environmental urea), is necessary to use SCR technology consumables. SCR systems including urea tank (diesel exhaust treatment fluid loading), SCR catalytic reaction tank. SCR system is running: When the discovery of nitrogen oxides in the exhaust pipe, the urea tank is automatically ejected diesel exhaust treatment fluid, diesel exhaust treatment fluid and nitrogen oxide redox reactions SCR catalytic reaction tank, generate no nitrogen and water vapor exhaust pollution. If you do not load the diesel exhaust treatment fluid, or pure enough, or inferior quality will occur automatically slow the vehicle engine. Meanwhile, shoddy quality diesel exhaust treatment fluid can contaminate the SCR catalyst in the catalytic reaction tank, resulting in serious consequences. In fact, in Europe, in 2006 it has begun to implement this policy. European diesel exhaust treatment solution called Adblue. BP and other major representatives. In the United States, beginning in 2010, with the implementation of standards EPA2010, also increased the application of the full implementation of the intensity of this product in the US, diesel exhaust treatment fluid called DEF (Diesel Exhaust Fluid). The main representatives BlueDEF like. At present, this product has two main international certification, one German Automobile Industry Association (VDA) of AdBlue certification, and the other is the American Petroleum Institute (API) of DEF certification. In China, Jiangsu, KLS is the only company currently more than two certified manufacturer of diesel engine exhaust treatment fluid. In China, for the production of diesel exhaust treatment fluid is still an emerging industry, the current major manufacturers including KLS, Sinopec, Yuchai, etc., is expected in the second half of 2011 or the first half of 2012 will develop our own Diesel exhaust fluid handling national standards