What this means
The IEEE assigned the MA-M block 3C6A2C2 to Bosch Automotive Products (Suzhou) 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 3C:6A:2C:2, it is Bosch Automotive Products (Suzhou) Co., Ltd. hardware.