This product integrates the functions of a diagnostic box (B-Box) and communication box (C-Box) into a single unit, supporting remote vehicle fault diagnosis, data acquisition, and firmware flashing. It is compatible with mainstream OBD II and CAN FD protocols, uploading real-time vehicle operating parameters to the cloud platform. Built-in 4G/5G and Wi-Fi dual-mode communication modules enable remote command transmission and online engineer assistance, significantly improving after-sales response efficiency. Ideal for fleet management, remote repair, and R&D testing applications.