Microcontrollers (MCUs) are core control units for embedded systems, applied across industrial control, consumer electronics, IoT devices, and smart home products. These chips may become idle inventory due to product design changes, project termination, procurement redundancy, or shifts in production requirements. We support the recycling of surplus and unused MCUs from various application scenarios, assisting enterprises in properly disposing of idle control components, releasing inventory and capital pressure, and tapping into the residual value of these widely used electronic parts.