However, if your seafood is not properly preserved during transportation, or is excessively shaken or hit during express delivery, it may lead to deterioration or damage of seafood within four days. Therefore, it is suggested that you choose SF Express's chilled delivery service when purchasing seafood, so as to ensure the quality and safety of seafood in the express delivery process. At the same time, you can check the freshness and quality of seafood at the time of receipt. If you have any questions, you can contact the courier company or merchants in time to communicate and deal with them.