The first is the market is not standardized, the lack of clear industry access system, that lack of qualified enterprises have entered the vehicle with the urea industry in the past, is not conducive to the healthy development of the market; secondly, because of cost considerations, consumers will buy some inexpensive urea products, and these products are often difficult to guarantee the quality, not only harm the interests of consumers, but also impact on the market; Third, some urea enterprises in the invoice will choose to issue tax invoices relatively low agricultural urea, which is dedicated operating vehicle urea companies unfair. Therefore, the price of urea plant vehicles, vehicle sound development of the urea market is still dependent on the changing industry increased regulation and the consumer consciousness. The main pollutant emissions of diesel engines are NOx (nitrogen oxides) and PM (particulate), required to reduce emissions of these two operating conditions are exactly the opposite, and therefore, there has been EGR (exhaust gas recirculation) and SCR (selection catalytic reduction) are two technical solutions to meet the requirements of China IV emissions. Adopt SCR technology roadmap engine combustion process, has made diesel combustion by technical means to achieve effective control of PM emissions targets, and NOx in the exhaust process is required in its reduced to nitrogen (N2) and water (H2O), this process is reducing vehicle urea solution. When injected into the urea solution into the exhaust pipe from the exhaust turbocharger out of the exhaust pipe is installed metering urea injection device, at temperatures up to 300 ℃ -500 ℃, in the catalyst of urea (NH2CONH2) hydrolysis NH3 and CO2, NH3 and NOx reaction, automotive urea, nitrogen gas and water discharge. Car catalytic reduction with urea solution in the control is a refinement of the process, the amount of urea injected into the match must be the NOx concentration, the amount of urea injected too little, vehicle urea production equipment, amounted to no to the proper level of treatment, the amount of urea injected too much will cause the excess ammonia into the atmosphere, leading to new pollution. Vehicle urea solution _ East Delta Chi Chemical (Online) _ Automotive urea provided by Delta Chi Chemical Co., Ltd. Jinan East. Jinan East Delta Chi Chemical Co. (sddqhd.com) is a leader in Jinan, chemical equipment, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. East Delta Chi Chemical leadership with the staff warmly welcome all inquiries negotiations to create the East Delta Chemical Qi better future.