Interior ordinary putty powder is mainly used for leveling walls, since it is not waterproof, should be the surface to brush the paint, or will cause a large area off the powder, affect the appearance. This product can use within water directly, without glue. It has advantages as strong adhesion, easy to burnish, reserving powder, no wrapper, no crack, no bubble, low price. Apply to interior wall with full of batch.Mainly used as a paint primer leveling.