Insulin storage bag: Attention should be paid to temperature, light avoidance, and expiration date when storing insulin. Unopened insulin should be refrigerated (2-8 ℃) to avoid freezing; Opened insulin can be stored at room temperature (≤ 25-30 ℃, refer to the instructions for details) and can usually be used for about 28 days. Before use, check the condition to avoid high temperature or severe shaking.