What this means

The IEEE assigned the MA-S block 8C1F64B03 to Shenzhen Pisoftware 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 8C:1F:64:B0:3, it is Shenzhen Pisoftware Technology Co.,Ltd. hardware.