How to use: After this product is fully pre-cooled in the freezer, it can be used as a freezing medium as needed. 02 Scope of use: fresh express delivery, vaccine cold preservation, e-commerce express delivery, fresh transportation. 0202020202020202 Features: 1. This product is made of high-tech biomaterials. It is clean, rich in elasticity, and colloidal. 2. This product has high cooling capacity and good cold insulation performance. 3. It has a wide range of uses and does not cause pollution. 4. This product can be reused. 020202,000 fishing shop https://26996.qianyuwang.com/