Actually, in terms of oil, you can use Koufu soybean oil for your own use, and you can basically use large barrels of Seafood soybean oil for catering. If the oil is unopened, the shelf life is 18 months, which is quite durable for storage in the dark. However, if it is opened, you should eat it as soon as possible, otherwise it will easily lead to oil deterioration. It is difficult for ordinary families to use up such a large barrel of Seafood brand soybean oil in a short time, so its positioning is also catering oil.