RFID Dual-frequency tags can support both HF and UHF. It not only retains the function of UHF RFID for rapid inventory in large quantities, but also retains the ability of HF RFID to interact with mobile phones. It can not only meet the needs of the B-side for efficient turnover, loss prevention, and visual management, but also meet the needs of the C-side for anti-counterfeiting and traceability, and can form a good closed loop in business.