1. Shuangdi Zhongchuang has a small amount of additives. Hyun Mei-yeon doesn't have any additives or preservatives.
2. Shuangdi Zhongchuang has low cost performance, while Hyun Meiyan has high cost performance. "Hyun Mei Yan" is a registered trademark applied by France Stya (Hong Kong) International Beauty Group Co., Ltd.