Our company specializes in the production of vehicles with urea, urea vehicle heavy truck in China large passenger cars, trucks, diesel vehicles meet the national IV emission standards will use the product. Known car urea solution, the urea concentration of the product is the solvent and 34.5% ultra-pure urea aqueous solution, raw materials for the urea, ultra pure water. Especially suitable for China's heavy-duty trucks, buses and other diesel vehicles to meet the national IV emission standards on exhaust gas treatment system should be used and the appropriate SCR, and this system must use urea solution on the nitrogen oxides in the exhaust gas is processed, thereby play a role in purifying vehicle exhaust with urea. Therefore, the car became a large heavy trucks and buses meet the national emission standards for four essential products with urea solution. SCR is the best choice for our emissions. At present, the existing requirements for sulfur content Chai Youguo standard GB19147-2009 ≤360ppm, and ECR-DOC technical requirements for sulfur content of 11ppm or less oil, so it has good conditions for promotion in China. SCR can be resistant to 350ppm sulfur oil, and therefore promote technical foundation, but also the essential choice for future diesel vehicles, the use of SCR technology in the country four engine fuel economy better than the EGR technology, the engine change is small, does not require do too much overall change, fuel and oil requirements are lower, with advantages in technology upgrades continuity, SCR catalyst durability risk and there is no catalytic converter clogged, purification rate at 60% or more, so SCR technology is most suitable for China's heavy-duty diesel vehicle emissions technology route, but also for China's environmental protection has made improvements. Vehicle of 34.5% urea solution and the concentration of ultra-pure water solvent is an aqueous urea solution, the urea crystals and raw materials for the production of ultrapure water, the key point is the raw material purity. And screening of raw materials, manufacturing process from the point of view, although the car with urea raw material purity requirements than the general industrial demand, but the current domestic process already meet the actual application requirements. Car urea production process enough to make our emissions standards to meet international standards. Blue can be used only in combination SCR system configuration engine, because it is neither fuel nor fuel additives. AdBlue perform in line with ISO22241, DIN70070 standards and regulations within, in order to ensure the effective operation of the SCR system. AdBlue is not harmful to the environment and are classified as low-risk transportable liquid. My company car with urea mainly come from the industrial purification of urea, the main principle is: a) at a temperature of 70-75 ℃, urea hydrolysis in aqueous solution. 2) at a temperature below 30 ℃, urea re-crystallized from the aqueous solution. 3) Every once hydrolyzed crystalline purity will be a substantial increase in the general level of industrial crystallization using urea hydrolysis time, you can reach the car with urea standards, their output ratio of 1.5: 1, the purity of the leading domestic level. Using ultra-purity water level of the electronics industry with the urea solution, the urea solution vehicle SCR catalyst carrier can easily occur due to a metal ion poisoning, thus losing the catalytic effect, so the vehicle must be used in the electronics industry urea solution level, ultra pure water (resistivity ≥18MΩ ? cm). The car will start with a urea solution freezes at -11 ℃, the actual use will be completely frozen at -20 ℃ when. Current technology is reduced by adding the modifier solution freezing point, plus heating devices and other means to prevent solidification of the solution, at the technical level we also belong to the domestic high-end manufacturer / wholesale manufacturers. Car urea solution (AdBlue) is free of any high-purity urea, and other additives formulated with a solution of water, the urea content in the solution was 34.5% (mass fraction). Most domestic and foreign manufacturers of heavy-duty diesel engines using SCR (Selective Catalytic Reduction) technology to meet Euro IV, Euro Ⅴ diesel vehicle emission standards. Select the SCR technology vehicles must add urea solution as catalytic reducing agent, the vehicle emissions standards. And before the market must detect index after national authoritative departments through before they can officially put into market. Diesel engine exhaust treatment liquid (commonly known as: automotive urea, urea vehicle, automotive environmental urea), in China and Europe, called AdBlue, in Europe known as DEF, in Africa called ARLA32 AdBlue is a composition of 34.5% is high. High-purity urea and 67.5% pure deionized water was transparent liquid, its color is transparent color, with a touch of ammonia odor. If spilled, water evaporation and crystallization. AdBlue is used with SCR (Selective Catalytic Reduction vehicle exhaust after treatment) system for heavy trucks, mining trucks, excavators, buses and heavy-duty off-road vehicles using diesel engines, is a must to use SCR technology consumables, SCR catalyst and the harmful emissions of nitrogen oxides in diesel engines together with the conversion into harmless water vapor and nitrogen. The main components of the SCR system includes a catalyst, AdBlue injection device, AdBlue AdBlue dose containers, and a controller. Almost all of the United States, Europe and Asia, including China's heavy-duty vehicle manufacturers for vehicles equipped with selective catalytic reduction system and with AdBlue fluid, such as China National Heavy Duty Truck, China Shaanxi Auto, Weichai Power and other heavy-duty vehicles and engines, heavy Automobile manufacturers use, and strict exhaust emissions requirements of purification, in order to meet the new emission standards for nitrogen oxides (such as Euro IV, Euro V) under the AdBlue and SCR technologies together, to optimize engine performance and fuel consumption, reduce diesel fuel consumption can be Up to 7%, significantly reducing costs. The average consumption of AdBlue is 6% of diesel consumption in general, about highway driving consumes 1.5 liters per 100 kilometers. Ad