This product is applicable to the country four emission standard diesel engine, by the ultra pure water and high pure urea preparation, urea concentration is 33.5%, in line with the national implementation of the standard requirements. The product quality is stable and reliable, green energy saving, can significantly improve the diesel engine power, while reducing exhaust emissions. The national standard clearly stated, no special car with urea and other special requirements, as long as the products are in line with national standards can be assured.