This is a concrete waterproofing product independently developed by our company. It consists of a nano-active self-healing masterbatch and high-strength alkali-resistant fiber, serving as an internal concrete admixture. It possesses impermeability, crack resistance, and crack self-healing properties. Upon adding to the concrete mixture, this product effectively enhances the tensile strength of the structure while mitigating issues such as shrinkage-induced cracking and settlement-related problems. Moreover, in case of concrete cracking or leakage, the nanoscale active masterbatch can be activated to react with water and generate crystals that fill and seal the cracks, achieving a remarkable self-healing effect. Additionally, this product also reduces the hydration reaction rate of cement, delays heat release during concrete hydration process, thereby minimizing cracks caused by temperature differences.