12 months. According to the query of "Xizhilang" in official website, the shelf life of good times seaweed is 12 months, and it is rich in nutrition and high in iodine. The polysaccharide contained in it can obviously enhance cellular immunity and humoral immunity. Porphyra and laver are crisp and tender after baking, and melt in the mouth. Especially after seasoning, adding seasonings such as oil and salt becomes a particularly delicious "seaweed".