This product is SCR reducting agent, usually colorles, tasteless, non-toxic liquid, has some corrosion. Using SCR technology can effectively reduce the fluel consumption, effectively reduce harmful emissions in engine tail gas. This product should be added to the on-board urea box through an auxiliary charging device, forbidding adding to the fuel tank. When the AdBlue on-board urea box insufficient, should be timely to add this product to keep the normal running of the engine. This product is applicable to all the national IV / V emission standard of SCR systems of diesel-powered vehicles.