This product is a modified polymer emulsion, brushing the underside of the stone, which can penetrate into the pores in the micro-cracks, the bottom surface of the stone pores and micro-cracks and filling, plugging, and in the back of the stone form a milky white protective film, and excellent alkali resistance, can effectively prevent the inhalation of concrete mortar with strongly alkaline water when the natural stone and concrete bonding caused by stone disease (such as: Bai Hua, vomiting yellow, rust, water spots and other stone disease), and can greatly enhance the cohesive force of stone and mortar, to prevent the hollowing due to stone wet paste and concrete adhesion problems caused by the construction quality and even safety problems off the wet paste of dry hanging construction to achieve the desired effect. And the product is milky white, especially for white lines painted on the bottom surface of natural stone (eg: Aston white, white jazz, Magnolia, etc.) to improve the overall effectiveness and quality of such stone.