Flexible Printed Circuit Boards (FPCs) are designed to be bendable and can be easily flexed or twisted without damaging the circuitry.They are manufactured using thin, flexible substrates such as polyimide or polyester film, with conductive tracks etched onto their surface. FPCs are commonly used in applications where space is limited and flexibility is required, such as mobile device... https://www.pcbhamal.com/pcb-fabrication-capabilities/flexible-pcb/