Flexible PCBs (FPC) and rigid-flex PCBs act as the "reliable operational cores" in POS machines, undertaking core tasks of real-time transaction data transmission, compact component integration, and stable operation under frequent daily use. 

From desktop POS terminals and portable handheld POS devices to mobile payment POS systems and self-service checkout terminals, their excellent stability, anti-interference performance, and space-saving design directly ensure transaction efficiency, payment security, and device durability, empowering the convenience and intelligence of retail and catering payment scenarios.