"Meiji Fu 400G" likely refers to a 400-gram product from Meiji, a well-known Japanese food and confectionery company. While the exact details aren't specified, Meiji produces various items like:
Chocolates (e.g., Meiji Milk Chocolate)
Nutritional supplements (e.g., Meiji Amino Collagen)
Yogurts or dairy products
Baby formula or health foods