Sausages are usually kept in a vacuum seal, and it's okay without putting them in the refrigerator.
If you don't put the sausage in the refrigerator after opening, you'd better finish it in one day. If it's summer, it may only last for a day or half a day, but it will be better in autumn and winter. If it's in the refrigerator, it can't last too long, and the longest time is a week. If it is left for a long time, it will taste bad. I suggest you buy it once and eat it after you buy it.
Sanlin sausage is a well-known local specialty food in Shanghai, and many post-8s generations said that eating mountain red sausage is their childhood memories. Sweet, fresh and fragrant mountain red sausage is a classic representative of Shanghai style cooked food, or snacks or cold dishes, and it can also be used to cook a pot of delicious Luo Songtang.