美国采购需求：PCB制造、PCB组装、一站式服务、柔性PCB、刚挠结合PCB、HDI PCB

We are seeking a partnership with a capable ODM manufacturer for the design, prototyping, and production of a compact AIO board tailored for custom 5-inch FPV drones. Key specs include a 30.5mm x 30.5mm form factor, a powerful MCU running Betaflight, a robust 4-in-1 ESC, and an integrated ExpressLRS 2.4GHz receiver. We also require a high-performance gyro, onboard BEC, and extensive connectivity options, including USB-C and multiple UARTs. Please confirm your expertise in integrating RF technologies and onboard features like the buzzer. Along with your confirmation, we would appreciate details regarding your engineering fees and the cost for a prototype unit. Before proceeding with further discussions, we will need to sign a mutual NDA. We are ready to move quickly once the NDA is in place.