What this means
The IEEE assigned the MA-L block 1C1EE3 to Hui Zhou Gaoshengda Technology 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 1C:1E:E3, it is Hui Zhou Gaoshengda Technology Co.,LTD hardware.