LG680 two-component epoxy interface agent is water-resistant after curing and can be used as a moisture-proof film; Strong permeability, can be used to reinforce the base layer: can be used for repairing non structural cracks; Can be used for low-temperature construction and non absorbent substrates. Two component epoxy moisture-proof treatment for absorbent and non absorbent substrates; For loose concrete base, it can be reinforced by infiltration. It is mainly used in combination with the self leveling cement of the blue penetration K90 surface layer to ensure a good connection bridge and complete closure, so that there are no air holes on the self leveling surface.