1. Definition of milk powder segmentation Milk powder segmentation refers to classifying milk powder according to different formula proportions based on the physiological characteristics and nutritional needs of infants and young children of different ages. Common milk powders currently on the market are divided into Stage 1, Stage 2, Stage 3, Stage 4, etc. 2. Characteristics of Stage 1 milk powder 1. Applicable objects: babies aged 0-6 months. 2. Formula features: low protein content, high fat and carbohydrate content, easy to digest and absorb