Cement-based crystalline penetration waterproof coating

It is a rigid powdered waterproof material composed of silicate cement, refined quartz sand, special active chemical substances and various additives. 
Unlike traditional "surface sealing" waterproofing materials, its core concept is "penetrative crystallization and self-repair". When mixed with water, the active chemical substances contained within it will, through the medium of water and by means of osmotic pressure, penetrate into the capillary pores and micro-cracks within the concrete.
Core working principle (how does it waterproof?)
1. Penetration: After the coating is applied to the concrete surface, driven by water, the active chemical substances in the formula penetrate into the interior of the concrete.
2. Reaction and crystallization: These active substances react chemically with the unhydrated cement particles, free lime, and water in the concrete, generating insoluble fibrous crystals.
3. Filling and sealing: These crystals continue to grow, filling and sealing the capillary pores and micro-cracks within the concrete, significantly reducing the porosity of the concrete and making its structure denser, thereby blocking the passage of water.
4. Self-repair (the magical aspect): Even if the coating surface is damaged, as long as there is water and unhydrated cement components inside the concrete, this chemical reaction can still be activated at some point in the future to generate new crystals to seal the tiny cracks (usually no more than 0.4mm) that may form later. This is the greatest characteristic that distinguishes it from other waterproofing materials. 
Simple analogy: It's like "vaccinating" the concrete with a kind of vaccine that can continuously grow and heal its own "injuries and illnesses".