What this means
The IEEE assigned the MA-M block 6C5C3D0 to ShenZhen Hugsun 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 6C:5C:3D:0, it is ShenZhen Hugsun Technology Co.,Ltd. hardware.