1. Keep in refrigerate do not freeze labels are perfect for industrial. 2. Adhesive labels with strong adhesive, you could stick them to most flat surfaces. 3.Self-adhesive stickers provide a professional appearance to your important shipments. 4.Each signs size is 1.75x1 inch,500 pcs per pack. 5.Your satisfaction is our aim.If you have any questions about our products,please contact us!