Devices with MAC addresses that start with A4-81-7A were manufactured by CIG SHANGHAI CO LTD

Device ManufacturerCIG SHANGHAI CO LTD
5th Floor, Building 8 No 2388 Chenhang Road
SHANGHAI 201114
Estimated Devices with A4-81-7A16256250
Estimated Total Devices From Mfg32512500
Other MAC AddressesEC-84-B4
Address Examples