 Refinery improves the quality of a weapon or a piece of defensive gear, increasing the stat bonuses they grant, and is an important process of the game.Players can use talismans and, sometimes, an auxiliary item to improve, or guarantee the success of a refinery.Refinery improves the quality of the item, adding attributes to it and giving it a glow of different colors depending on the level of the refinery; e.g., a +9 armor grants a high bonus to Defense and glows green.