What this means
The IEEE assigned the MA-L block C0B5D7 to CHONGQING FUGUI ELECTRONICS CO.,LTD.. Every network interface they manufacture under this block has a MAC address beginning with these digits, followed by a unique per-device identifier. If a device on your network shows a MAC starting C0:B5:D7, it is CHONGQING FUGUI ELECTRONICS CO.,LTD. hardware.