After several attempts and improvements, SL Towel was finally able to secure a Taiwanese patent for the Cake Towel via a cylindrical paper mold. Once that was in place, profits began to rise such that a small square towel worth little more than NT $ 10 tripled in value after being transformed into a cake.
幾經嘗試、改良，最後興隆以圓柱體紙模結構取得「蛋糕毛巾」的台灣專利權，利潤也跟著提升，一條批發價十幾元的小方巾，變身小蛋糕後，身價就能提高到三十幾元。