1, taste: Mengniu and Yili's pure milk is different in taste. Mengniu's pure milk has a richer taste, with a certain sweetness and milky flavor, while Yili's pure milk is lighter and softer, with no obvious sweetness. This difference may be related to the processing and formulation of different brands.

2, nutrients: Mengniu and Yili's pure milk in the nutritional composition of the difference is not great, are rich in protein, calcium, vitamin D and other nutrients. However, there are some differences in the content of certain nutrients. For example, Mengniu's pure milk contains up to 3.6 grams of native protein per bottle, while Yili's pure milk contains 2.9 grams of native protein per bottle. These differences may have some impact on consumers' health.

3, production process: Mengniu and Yili's pure milk in the production process there are also some differences. Mengniu using advanced UHT ultra-high temperature sterilization process, can better retain the nutrients and taste of milk. Yili, on the other hand, uses a high-temperature short-term sterilization process, which can better maintain the freshness and nutritional value of the milk. These different production processes may have some impact on the quality and taste of the product.

4, brand reputation: Mengniu and Yili are both well-known brands of dairy products in China, with high brand reputation and word of mouth. Both brands have gone through strict inspection and supervision in terms of product quality and food safety, and are able to guarantee the quality and safety of their products. However, there are some differences between the two brands in terms of brand image and consumer perception. Mengniu has been committed to creating a young and fashionable brand image, while Yili focuses more on a robust and traditional brand image. This difference may have some impact on consumers' purchasing decisions.