1. The duration for which surveillance footage is retained in a shopping mall is determined by the capacity and performance of the storage equipment.2. In smaller malls, surveillance footage is typically overwritten every 15 days.3. In larger malls, due to their size and complexity of operations, surveillance footage is saved for 30 to 60 days.4. This allows for a longer trail of activities to resolve disputes and security incidents.5. Large malls offer a comprehensive shopping and leisure experience.6. The retention period for surveillance footage in shopping malls ranges from 7 days to 60 days, depending on the mall's size and operational needs.7. This setup aims to ensure the smooth operation of business activities while balancing privacy protection and public safety.