Redispersible latex powder (RDP) is a water-soluble redispersible powder, which can be quickly dispersed into an emulsion after contacting with water. It is a special polyvinyl alcohol as a protective colloid of ethylene vinyl acetate polymer (EVA ) rubber powder. It is a powder adhesive made of dispersive colloid as polymer resin, additives (internal and external), protective colloid, anti-caking agent and other raw materials, and then made by spray drying. It is mainly used in construction, has outstanding bonding strength, improves the flexibility of the mortar and has a longer opening time, gives the mortar excellent alkali resistance, and improves the adhesion, flexural strength, waterproof, plasticity, In addition to wear resistance and construction, it has stronger flexibility in flexible mortar.