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

Device Manufacturer
CIG SHANGHAI CO LTD

Manufacturer Location
5th Floor, Building 8 No 2388 Chenhang Road
SHANGHAI 201114

Estimated Devices using A4-81-7A
16,256,250

Estimated Total Devices From Mfg
32,512,500

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