Nine months. The shelf life of boxed Wangzai is 9 months, the shelf life of canned Wangzai is 15 months, and Wangzai shake and freeze is boxed, so the shelf life of Wangzai shake and freeze is 9 months. Shelf life usually refers to the period during which prepackaged foods can maintain its quality under the storage conditions specified in the label. During this period, the product is completely suitable for sale and maintains the unique quality that does not need to be explained or has been explained in the label.