The importance of AdBlue® for vehicles is self-evident, its ingredients are urea and water. The real key point is its srtict manufacturing standards. First, the manufacturer needs to purify the urea, and then separate the charged particles in the water to make deionized water. 32.5% high-purity urea and 67.5% deionized water is neccessary. It is not easy to complete sophisticated matching and purification work. The production equipment for AdBlue® needs to adopt 316 stainless steel material, and the whole process including water production, purification and filling is all closed operation. Even in such an ideal working environment, the manufacturer need to clean the entire equipment every two months and use high-pressure air to prevent metal residues and ions from entering the AdBlue®.