1. Important for Calves: Colostrum is the milk secreted by cows within 72 hours after giving birth. For calves, high nutritional value. 2. Rich in Nutrients: Colostrum contains valuable active immunoglobulins (LG6, IgA, IgM, IgE, IgD) and rich nutritional ingredients such as milk calcium, protein, and a variety of trace elements. 3. Practical and Convenient: The colostrum bag can effectively collect and store bovine colostrum. Screw interface, easy to use, manual lifting design, easy to carry. 4. Widely Used: The calf colostrum packaging bag is suitable for calf colostrum bags, sheep milk bags, perfect for pastures. 5. Premium Material: Made of high-quality plastic material, safe and non-toxic, no harm to the health of young animals, very environmentally friendly.