Introducing our revolutionary product, the "Vacuum Insulation Panel Leak Proof 20mm Medical Cool Box!" This advanced cool box, made with durable EPP material, is designed to maintain a consistent cold temperature for an impressive 72 hours. As a factory, we take pride in crafting high-quality products that are leak-proof and highly efficient. Our cool box's innovative vacuum insulation panel ensures maximum insulation and minimal heat transfer, making it perfect for medical purposes. Invest in our product today and experience long-lasting cold preservation like never before.