Nutritional composition analysis of milk powder Wyeth Qifu. Wyeth Qifu is a milk powder product focusing on 4-stage babies. It is designed to provide comprehensive nutrition according to the growth and development needs of infants and young children. From the nutritional formula analysis of Qifu 4, we can see that the main ingredients of this milk powder include protein, carbohydrates, fats, minerals, vitamins, etc. Protein: The protein content of Wyeth Kefu is the same as that of most Stage 4