What this means
The IEEE assigned the MA-M block CC39530 to QINGDAO SANSHUN SMART ELECTRIC APPLIANCE 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 CC:39:53:0, it is QINGDAO SANSHUN SMART ELECTRIC APPLIANCE CO.,LTD. hardware.