Features: 1. **Enhanced Waterproofing**: Our advanced formula features lauryl polyether-7 and silane, providing superior anti-seepage protection for concrete surfaces, ensuring long-lasting durability and resistance to water damage. 2. **Improved Surface Smoothness**: This hardener spray not only strengthens but also enhances the smoothness of concrete, creating a flawless finish that is visually appealing and easy to maintain. 3. **Easy Application**: Simply clean the surface, shake the can, and spray directly onto the concrete. With a quick drying time of just 6 hours, you can achieve professional results with minimal effort. 4. **Deep Penetration Technology**: Our formula penetrates deeply into the concrete, binding with loose particles to significantly increase hardness and strength, making your surfaces more resilient against wear and tear. 5. **Promotes Coating Adhesion**: The unique composition promotes better adhesion for subsequent coatings, ensuring that paints and sealants stick effectively, enhancing the longevity of your concrete projects. Our waterproof concrete hardener contains lauryl polyether-7, silane. It can improve surface smoothness and impermeability, promote coating uniformity and better adhesion. Its use method is very simple: clean the surface, keep it clean, dust free, no loose, gently shake the product directly sprayed on the concrete surface, let it sit for 6 hours, dry. And can penetrate deeply into the concrete surface, binding with loose particles: significantly improve the overall hardness and strength.