Du Yu Wan became popular in Huzhou City, Zhejiang Province, so she registered a trademark in its name. Du fish balls, the price of one fish ball is 15 yuan, and the shelf life does not exceed 7 days. Because her fish balls are fresh and Q-shaped, they are liked by many consumers.

Du is a shareholder of Zhejiang Xunweitang Food Co., Ltd. and an executive of Hunan Nanxun Xunweitang Food Co., Ltd., and the companies he runs are developing quite well.