FPC is usually composed of a flexible insulating substrate, a conductive copper layer, and a coverlay, which together provide the electrical connections and mechanical protection required for the circuits. The flexibility of FPC in terms of bending and folding makes them highly suitable for applications with limited space. The lightweight feature enables it to be effectively applied in portable devices and products that require weight reduction. Complex design shapes can improve space utilization. The diverse installation methods facilitate the integration, assembly, maintenance, and environmentally friendly recycling of derivative products. It itself has good temperature resistance and stable electrical performance. Overall, the cost-effectiveness and environmental benefits of flexible circuit boards are very superior.