SCR (Selective Catalytic Reduction) Urea solution is a liquid reducing agent used to reduce emissions from diesel engines. Its main components are high-purity urea (chemical formula CO(NH₂)₂) and deionized water, usually formulated with 32.5% urea and 67.5% deionized water ratio, also known as AdBlue or DEF (Diesel Exhaust Fluid) on the market.

Efficient reduction of NOx emissions: SCR systems can significantly reduce NOx emissions from diesel engines, typically by more than 90%.

Compliance with emission standards: Help vehicles comply with stringent emission regulations such as European standards (e.g. Euro 6), U.S. standards (e.g. EPA Tier 4), etc.
 

Storage conditions: Urea solution should be stored in an environment of 5 degree C to 25 degree C, away from direct sunlight and extreme temperatures, in order to maintain its chemical properties.
 

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