Lan Guan LG670 multifunctional non absorbent interface agent is a polymer co polymerized from styrene/acrylic ester through a special process. It has the characteristics of small particles, strong sealing, tough film, strong permeability, excellent alkali and weather resistance, and good adhesion to the base layer with a wide range of applications. Suitable for inorganic absorbent substrates, as well as non absorbent substrates such as tiles, marble, polished tiles, etc.